It has been generally accepted that momentum-dependent potentials for neutrons and protons at energies well away from the Fermi surface cause both to behave as if their inertial masses are effectively 70% of the vacuum values. This similarity in effective masses may no longer hold in dense neutron-r…

[Phys. Rev. C 94, 011601(R)] Published Fri Jul 01, 2016

]]>This paper suggests that a change in the lifetime of the $\alpha $-decay process in ${}^{241}\mathrm{Am}$ may be detected at high pressures achievable in the laboratory, essentially, due to the extraordinary high compressibility of Am at the megabar range. The Thomas-Fermi model was used to calculate the effect of high pre…

[Phys. Rev. C 94, 014601] Published Fri Jul 01, 2016

]]>In this work we have studied ${T}_{z}=+2\to +1$, Gamow-Teller (GT) transitions in the ${}^{48}\mathrm{Ti}({}^{3}\mathrm{He},t){}^{48}\mathrm{V}$ charge-exchange reaction at 140 MeV/nucleon and ${0}^{\circ}$ at the Research Center for Nuclear Physics, Osaka. From the high-resolution facility, consisting of a high-dispersion beamline and the Grand Raiden spectromet…

[Phys. Rev. C 93, 064326] Published Thu Jun 30, 2016

]]>Large-scale shell-model calculations are performed for even-even, odd-mass, and doubly odd nuclei of Pb, Bi, Po, At, Rn, and Fr isotopes in the neutron deficit region $\left(Z\ge 82,N\le 126\right)$ assuming ${}^{208}\mathrm{Pb}$ as a doubly magic core. All the six single-particle orbitals between the magic numbers 82 and 126, namely…

[Phys. Rev. C 93, 064327] Published Thu Jun 30, 2016

]]>We present a procedure that is helpful to reduce the computational complexity of large-scale shell-model calculations, by preserving as much as possible the role of the rejected degrees of freedom in an effective approach. Our truncation is driven first by the analysis of the effective single-partic…

[Phys. Rev. C 93, 064328] Published Thu Jun 30, 2016

]]>Two-particle pseudorapidity correlations are analyzed in a simple model, where in the initial stage of the reaction multiple sources, extended in rapidity, are created. We show how the fluctuations of the length of the sources in rapidity generate correlations in the initial entropy deposition, whic…

[Phys. Rev. C 93, 064910] Published Thu Jun 30, 2016

]]>We study the electroweak properties of ground state octet baryons in a relativistic quark-spectator-diquark model, with a light-front formalism applied to take relativistic effects into account. Our model provides a consistent picture of the electroweak properties of the ground state octet baryons i…

[Phys. Rev. C 93, 065209] Published Thu Jun 30, 2016

]]>Neutron-rich light nuclei and their reactions play an important role in the creation of chemical elements. Here, data from a Coulomb dissociation experiment on ${}^{20,21}\mathrm{N}$ are reported. Relativistic ${}^{20,21}\mathrm{N}$ ions impinged on a lead target and the Coulomb dissociation cross section was determined in a kinem…

[Phys. Rev. C 93, 065807] Published Thu Jun 30, 2016

]]>The two-step process of transfer followed by breakup is explored by measuring a rather complete set of exclusive data for reaction channels populating states in the ejectile continua of the ${}^{7}\mathrm{Li}+{}^{93}\mathrm{Nb}$ system at energies close to the Coulomb barrier. The cross sections for $\alpha +\alpha $ events from one proton pi…

[Phys. Rev. C 93, 061602(R)] Published Wed Jun 29, 2016

]]>Multipole strength distributions for isoscalar $L\le 2$ transitions in ${}^{28}\mathrm{Si}$ have been extracted using 386-MeV inelastic $\alpha $ scattering at extremely forward angles, including ${0}^{\circ}$. Observed strength distributions are in good agreement with microscopic calculations for an oblate-deformed ground state. In parti…

[Phys. Rev. C 93, 064325] Published Wed Jun 29, 2016

]]>We study the details and time dependence of particle production in nuclear collisions at a fixed target beam energy of ${E}_{\mathrm{lab}}=1.76A$ GeV with the UrQMD transport model. We find that the previously proposed production mechanisms for multistrange hadrons $\varphi $ and $\mathrm{\Xi}$ are possible due to secondary interactions…

[Phys. Rev. C 93, 064908] Published Wed Jun 29, 2016

]]>We show that the measured yield ratio ${}_{\mathrm{\Lambda}}{}^{3}\mathrm{H}/{}^{3}\mathrm{He}\phantom{\rule{0.16em}{0ex}}({}_{\overline{\mathrm{\Lambda}}}{}^{3}\overline{\mathrm{H}}/{}^{3}\overline{\mathrm{He}})$ in $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{{s}_{NN}}=200$ GeV and in $\mathrm{Pb}+\mathrm{Pb}$ collisions at $\sqrt{{s}_{NN}}=2.76$ TeV can be understood within a covariant coalescence model if (anti-)$\mathrm{\Lambda}$ particles freeze out earlier than (anti-)nucleons but their relative freeze-out time is closer at $\sqrt{{s}_{N\dots}}$

[Phys. Rev. C 93, 064909] Published Wed Jun 29, 2016

]]>”Additional” ionization of light atoms and ions during nuclear ${\beta}^{-}$ decay is investigated. A procedure that can be used to determine the corresponding transition probabilities and the velocity/energy spectrum of secondary electrons is developed. Emission of very fast secondary electrons ($\delta $ electrons) …

[Phys. Rev. C 93, 065503] Published Wed Jun 29, 2016

]]>The $\beta $-decay properties of the very neutron-rich ${}^{84}\mathrm{Ge}$ nucleus were studied at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. Several new $\gamma $-transitions and levels were added to its decay scheme and the order of the two lowest-lying levels in the daughter ${}^{84}\mathrm{As}$ was correct…

[Phys. Rev. C 93, 064324] Published Tue Jun 28, 2016

]]>The recent update of the strangeness $-2$ ESC08c Nijmegen potential incorporating the NAGARA and KISO events predicts a $\mathrm{\Xi}N$ bound state, ${D}^{*}$, in the ${}^{3}S_{1}(I=1)$ channel. We study if the existence of this two-body bound state could give rise to stable three-body systems. For this purpose we solve the bound …

[Phys. Rev. C 93, 064003] Published Mon Jun 27, 2016

]]>The neutron decay of the resonant states of light neutron-rich nuclei is an important and poorly explored property, useful to extract valuable nuclear structure information. In the present paper the neutron decay of the ${}^{15}\mathrm{C}$ resonances populated via the two-neutron transfer reaction ${}^{13}\mathrm{C}({}^{18}\mathrm{O},{}^{16}\mathrm{O}\phantom{\rule{0.16em}{0ex}}n)$ at …

[Phys. Rev. C 93, 064323] Published Mon Jun 27, 2016

]]>[Phys. Rev. C 93, 069905] Published Mon Jun 27, 2016

]]>Excitations of colliding nuclei during a nuclear reaction considerably affect fusion cross sections at energies around the Coulomb barrier. It has been demonstrated that such channel coupling effects can be represented in terms of a distribution of multiple fusion barriers. I here apply a Bayesian a…

[Phys. Rev. C 93, 061601(R)] Published Fri Jun 24, 2016

]]>We study the event-by-event generation of flow vorticity in the BNL Relativistic Heavy Ion Collider $\mathrm{Au}+\mathrm{Au}$ collisions and CERN Large Hadron Collider $\mathrm{Pb}+\mathrm{Pb}$ collisions by using the hijing model. Different definitions of the vorticity field and velocity field are considered. A variety of properties of t…

[Phys. Rev. C 93, 064907] Published Fri Jun 24, 2016

]]>To analyze the property of nuclear matter in the ${}^{16}\text{O}+\phantom{\rule{0.16em}{0ex}}{}^{208}\text{Pb}$ collision system, the internuclear potential of the fusion reaction is calculated by using the Skyrme forces associated with an extensive nuclear matter incompressibility $K$ range in the semiclassical energy-density formalism. Comparison of t…

[Phys. Rev. C 93, 064611] Published Thu Jun 23, 2016

]]>We study the integrated elastic and inelastic scattering cross sections together with their angular distributions of $n+{}^{6,7}\mathrm{Li}$ using $n+$ $\left(\alpha +d\right)$ and $n+$ $\left(\alpha +t\right)$ cluster models, respectively, and the continuum-discretized coupled-channel framework. The microscopic single-folding potential is used for the neu…

[Phys. Rev. C 93, 064612] Published Thu Jun 23, 2016

]]>The recently developed semilocal improved chiral nucleon-nucleon interaction is used for the first time to study several electromagnetic and weak processes at energies below the pion production threshold. Cross sections and selected polarization observables for deuteron photodisintegration, nucleon-…

[Phys. Rev. C 93, 064002] Published Wed Jun 22, 2016

]]>Within the framework of a dinuclear system model, the influence of projectile and target neutron number on capture cross section, fusion probability, and survival probability for the reactions ${}^{34,36}\mathrm{S}+{}^{238}\mathrm{U}$ and ${}^{48}\mathrm{Ca}+{}^{239,240,242,244}\mathrm{Pu}$ are investigated. The calculated excitation functions are in good ag…

[Phys. Rev. C 93, 064610] Published Wed Jun 22, 2016

]]>New results of the NA61/SHINE Collaboration at the CERN SPS on mean hadron multiplicities in proton-proton (p+p) interactions are analyzed within the transport models and the hadron resonance gas (HRG) statistical model. The chemical freeze-out parameters in p+p interactions and central Pb+Pb (or Au…

[Phys. Rev. C 93, 064906] Published Wed Jun 22, 2016

]]>We have previously calculated the pion-nucleon ${\mathrm{\Sigma}}_{\pi N}$ term in the chiral mixing approach with $u,d$ flavors only, and found the lower bound ${\mathrm{\Sigma}}_{\pi N}\ge \left(1+\frac{16}{3}{sin}^{2}\theta \right)\frac{3}{2}\left({m}_{u}^{0}+{m}_{d}^{0}\right)$, where ${m}_{u}^{0},{m}_{d}^{0}$ are the current quark masses, and $\theta $ is the mixing angle of the $[(\frac{\mathbf{1}}{\mathbf{2}},\mathbf{0})\oplus (\mathbf{0},\frac{\mathbf{1}}{\mathbf{2}})]$ and the $[(\mathbf{1},\frac{\mathbf{1}}{\mathbf{2}})\oplus (\frac{\mathbf{1}}{\mathbf{2}},\mathbf{1})]$ chiral multiplets. This…

[Phys. Rev. C 93, 065208] Published Wed Jun 22, 2016

]]>Using the iEBE-VISHNU hybrid model with AMPT initial conditions, we study the higher order flow harmonics of identified hadrons in $2.76A$ TeV Pb+Pb collisions. Comparison with the recent ALICE measurements at 20–30% centrality shows that our calculations generally describe the data below 2 GeV, espec…

[Phys. Rev. C 93, 064905] Published Tue Jun 21, 2016

]]>We discuss the effect of a neutron-proton pair in the $T=0,S=1$ channel in the low-lying states of the ${}^{102}\mathrm{Sb}={}^{100}\mathrm{Sn}+p+n$ nucleus. To this end, we construct a $\mathrm{core}+p+n$ three-body model with a model space based on Skyrme and relativistic mean-field calculations. The latter model is found to be more realis…

[Phys. Rev. C 93, 064319] Published Mon Jun 20, 2016

]]>**Background:** Measurements of $\beta $ decay provide important nuclear structure information that can be used to probe isospin asymmetries and inform nuclear astrophysics studies.

**Purpose:** To measure the $\beta $-delayed $\gamma $ decay of ${}^{26}\text{P}$ and compare the results with previous experimental results and shell-model calcu…

[Phys. Rev. C 93, 064320] Published Mon Jun 20, 2016

]]>Level structures of neutron-rich ${}^{140}\mathrm{Xe}$ nucleus have been reinvestigated by using a triple $\gamma $ coincidence study from the spontaneous fission of ${}^{252}\mathrm{Cf}$. Several new levels and transitions are identified. The previously observed $s=+1$ octupole band structure is confirmed and expanded. Another set of the $\mathrm{\Delta}\dots $

[Phys. Rev. C 93, 064321] Published Mon Jun 20, 2016

]]>The negative parity non-yrast band of ${}^{106}\mathrm{Ag}$ has been studied to investigate the falling trend in magnetic dipole transition rates. In this context, the level lifetimes of the excited levels of this band have been measured using the Doppler shift attenuation method. The comparison of the experimental…

[Phys. Rev. C 93, 064322] Published Mon Jun 20, 2016

]]>We propose a measurable parameter $\mathcal{H}$ quantifying the halo nature of one-neutron halo nuclei $\left(a\right)$ and investigate the properties of $\mathcal{H}$, assuming the core + neutron $(c+n)$ model for $a$. The parameter $\mathcal{H}$ is defined by $\mathcal{H}=[{\sigma}_{\mathrm{abs}}\left(a\right)-{\sigma}_{\mathrm{abs}}\left(c\right)]/{\sigma}_{\mathrm{abs}}\left(n\right)$ with directly measurable absorption cross sections ${\sigma}_{\mathrm{abs}}$ of $a$, $c$…

[Phys. Rev. C 93, 064609] Published Mon Jun 20, 2016

]]>[Phys. Rev. C 93, 069904] Published Mon Jun 20, 2016

]]>The analysis of high-precision ${\pi}^{\pm}p\to {\pi}^{\pm}p$ cross-sectional data from the EPECUR Collaboration based on the multichannel $K$-matrix approach is presented. The sharp structures seen in these data are studied in terms of both opening thresholds and new resonance contributions. Some prominent features are fou…

[Phys. Rev. C 93, 062201(R)] Published Fri Jun 17, 2016

]]>Isomeric states in ${}^{194}\mathrm{Po}$ and ${}^{192}\mathrm{Po}$ were studied at the velocity filter SHIP. The isotopes were produced in the fusion-evaporation reactions ${}^{141}\mathrm{Pr}$(${}^{56}\mathrm{Fe},\mathrm{p}2\mathrm{n}){}^{194}\mathrm{Po}$ and ${}^{144}\mathrm{Sm}$(${}^{51}\mathrm{V},\mathrm{p}2\mathrm{n}){}^{192}\mathrm{Po}$. Several new $\gamma $-ray transitions were attributed to the isomers and $\gamma -\gamma $ coincidences for both isomers were studied …

[Phys. Rev. C 93, 064316] Published Fri Jun 17, 2016

]]>The $\beta $ decay of ${}^{76}\mathrm{Ga}$ was studied using the technique of total absorption spectroscopy for the first time. The experiment was performed at the National Superconducting Cyclotron Laboratory using the Summing NaI(Tl) detector. The extracted $\beta $-decay feeding intensity distribution and Gamow-Teller transit…

[Phys. Rev. C 93, 064317] Published Fri Jun 17, 2016

]]>Collinear laser spectroscopy on ${}^{58\u201375}\mathrm{Cu}$ isotopes was performed at the CERN-ISOLDE radioactive ion beam facility. In this paper we report on the isotope shifts obtained from these measurements. State-of-the-art atomic physics calculations have been undertaken in order to determine the changes in mean…

[Phys. Rev. C 93, 064318] Published Fri Jun 17, 2016

]]>We report on measurements of the differential cross section $d\sigma /d\mathrm{\Omega}$ and the first measurement of the analyzing power ${A}_{y}$ in the $\mathrm{\Delta}\left(1232\right)$ excitation energy region of the reaction $pp\to {\left\{pp\right\}}_{s}{\pi}^{0}$ where ${\left\{pp\right\}}_{s}$ is a ${}^{1}S_{0}$ proton pair. The experiment has been performed with the ANKE spectrometer at COSY-Jülich. The …

[Phys. Rev. C 93, 065206] Published Fri Jun 17, 2016

]]>We determine the charge radius of the proton by analyzing the published low momentum transfer electron-proton scattering data from Mainz. We note that polynomial expansions of the form factor converge for momentum transfers squared below $4{m}_{\pi}^{2}$, where ${m}_{\pi}$ is the pion mass. Expansions with enough terms …

[Phys. Rev. C 93, 065207] Published Fri Jun 17, 2016

]]>**Background:** The “pasta” phase of nuclear matter may play an important role in the structure and evolution of neutron stars. Recent works suggest nuclear pasta has a high resistivity which could be explained by the presence of long-lived topological defects. The defects act as impurities that decreas…

[Phys. Rev. C 93, 065806] Published Fri Jun 17, 2016

]]>The $\beta $-decay half-lives of ${}^{128\u2013130}\mathrm{Cd}$ have been measured with the newly commissioned GRIFFIN $\gamma $-ray spectrometer at the TRIUMF-ISAC facility. The time structures of the most intense $\gamma $ rays emitted following the $\beta $ decay were used to determine the half-lives of ${}^{128}\mathrm{Cd}$ and ${}^{130}\mathrm{Cd}$ to be ${T}_{1/2}=246.2\phantom{\rule{0.16em}{0ex}}\left(21\right)$ ms and…

[Phys. Rev. C 93, 062801(R)] Published Thu Jun 16, 2016

]]>The purpose of the paper is mainly to test the validity of the Liège intranuclear cascade (INCL) model in calculating the cross sections of proton-induced reactions for cosmogenic nuclei using the newly compiled database of proton cross sections. The model calculations of ${}^{3}\mathrm{He}$ display the rising tend…

[Phys. Rev. C 93, 064608] Published Thu Jun 16, 2016

]]>[Phys. Rev. C 93, 069903] Published Thu Jun 16, 2016

]]>In the search for missing baryonic resonances, many analyses include data from a variety of pion- and photon-induced reactions. For elastic $\pi N$ scattering, however, usually the partial waves of the SAID (Scattering Analysis Interactive Database) or other groups are fitted, instead of data. We provide…

[Phys. Rev. C 93, 065205] Published Wed Jun 15, 2016

]]>An elastic backscattering experiment has been performed at energies below the Coulomb barrier to investigate static and dynamic effects in the interaction of ${}^{6}\text{He}$ with ${}^{209}\text{Bi}$. The measured cross sections are presented in terms of the $\mathrm{d}\sigma /\mathrm{d}{\sigma}_{Ruth}$ ratio, as a function of the distance of closest approach o…

[Phys. Rev. C 93, 064607] Published Tue Jun 14, 2016

]]>Assuming that the recently observed hidden-charm pentaquark state, ${P}_{c}\left(4450\right)$, is of molecular nature as predicted in the unitary approach, we propose to study the decay of ${\mathrm{\Xi}}_{b}^{-}\to J/\psi {K}^{-}\mathrm{\Lambda}$ to search for the strangeness counterpart of the ${P}_{c}\left(4450\right)$. There are three ingredients in the decay mechanism: the wea…

[Phys. Rev. C 93, 065203] Published Tue Jun 14, 2016

]]>The Kondo effect for isospin-exchange interaction between a $\overline{D},B$ meson and a valence nucleon in charm and bottom atomic nuclei including the discrete energy levels for valence nucleons is discussed. To investigate the binding energy by the Kondo effect, I introduce the mean-field approach for the b…

[Phys. Rev. C 93, 065204] Published Tue Jun 14, 2016

]]>**Background:** The observed mass excesses of analog nuclear states with the same mass number $A$ and isospin $T$ can be used to test the isobaric multiplet mass equation (IMME), which has, in most cases, been validated to a high degree of precision. A recent measurement [Kankainen *et al.*, Phys. Rev. C **93**,…

[Phys. Rev. C 93, 064310] Published Mon Jun 13, 2016

]]>The phenomenological optical potential parameters are known to vary with incident energy due to sources of nonlocalities in the nucleon-nucleus elastic scattering process. Here we investigate the effect of one source, which is coupling the ground-state elastic channel to collective inelastic excitat…

[Phys. Rev. C 93, 064311] Published Mon Jun 13, 2016

]]>The change in the configuration of valence protons between the initial and final states in the neutrinoless double-$\beta $ decay of ${}^{130}\text{Te}\to {}^{130}\text{Xe}$ and of ${}^{136}\text{Xe}\to {}^{136}\text{Ba}$ has been determined by measuring the cross sections of the $\left(d,{}^{3}\text{He}\right)$ reaction with 101-MeV deuterons. Together with our recent determination of t…

[Phys. Rev. C 93, 064312] Published Mon Jun 13, 2016

]]>The ground and first excited ${0}^{+}$ states of the ${}^{156\u2013172}\text{Er}$ isotopes are analyzed in the framework of the generator coordinate method. The shape parameter $\beta $ is used to generate wave functions with different deformations which together with the two-quasiparticle states built on them provide a set of stat…

[Phys. Rev. C 93, 064313] Published Mon Jun 13, 2016

]]>We perform simultaneous analysis of (1) matter radii, (2) $B(E2;{0}^{+}\to {2}^{+})$ transition probabilities, and (3) excitation energies, $E\left({2}^{+}\right)$ and $E\left({4}^{+}\right)$, for ${}^{24\text{\u2013}40}\mathrm{Mg}$ by using the beyond-mean-field (BMF) framework with angular-momentum-projected configuration mixing with respect to the axially symmetric ${\beta}_{2}$ defor…

[Phys. Rev. C 93, 064314] Published Mon Jun 13, 2016

]]>High-spin states in the ${}^{129}\mathrm{Xe}$ nucleus are studied with the reaction ${}^{124}\mathrm{Sn}\left({}^{9}\mathrm{Be},4n\right)$ at a beam energy of 36 MeV. The level scheme is extended significantly. For the positive-parity band, the $\alpha =+1/2$ and the $\alpha =-1/2$ signature components are combined to form a complete band structure based on the $3/{2}^{+}$ stat…

[Phys. Rev. C 93, 064315] Published Mon Jun 13, 2016

]]>We describe the evolution of the compact system formed by the touching of two colliding ions in reactions ${}^{58}\text{Fe}+\phantom{\rule{0.16em}{0ex}}{}^{248}\text{Cm}\to {}^{306-x}122+\phantom{\rule{0.16em}{0ex}}xn,\phantom{\rule{0.16em}{0ex}}{}^{64}\text{Ni}+\phantom{\rule{0.16em}{0ex}}{}^{244}\text{Pu}\to {}^{308-x}122+\phantom{\rule{0.16em}{0ex}}xn$, and ${}^{90}\text{Zr}+\phantom{\rule{0.16em}{0ex}}{}^{208}\text{Pb}\to {}^{298-x}122+\phantom{\rule{0.16em}{0ex}}xn$. The description is carried out within the dynamical multidimensional stochastic approach, based on Langevin equations f…

[Phys. Rev. C 93, 064606] Published Mon Jun 13, 2016

]]>Many important experiments such as the neutron electric dipole moment and lifetime, or properties of superfluid helium require superpure helium, i.e., helium with a million times smaller ${}^{3}$He contamination compared to natural helium. Whereas, in principle, techniques are available to produce superpure helium, no experimental techniques have been available to measure such a small concentration. This paper details the use of accelerator mass spectrometry (AMS) to measure the ${}^{3}$He concentrations in superpure helium.

[Phys. Rev. C 93, 065502] Published Mon Jun 13, 2016

]]>We report on the measurement of $J/\psi $ production in the dielectron channel at midrapidity $\left(\left|y\right|<1\right)$ in $p+p$ and $d+\mathrm{Au}$ collisions at $\sqrt{{s}_{NN}}=200\phantom{\rule{4pt}{0ex}}\mathrm{GeV}$ from the STAR experiment at the Relativistic Heavy Ion Collider. The transverse momentum ${p}_{T}$ spectra in $p+p$ for ${p}_{T}<4\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/c$ and $d+\mathrm{Au}$ collisions for ${p}_{T}<3\phantom{\rule{4pt}{0ex}}\mathrm{GeV}/c$…

[Phys. Rev. C 93, 064904] Published Fri Jun 10, 2016

]]>Time reversal invariance violating parity conserving (TVPC) effects are calculated for elastic proton-deuteron scattering with proton energies up to 2 MeV. The distorted-wave Born approximation is employed to estimate TVPC matrix elements, based on hadronic wave functions, obtained by solving three-…

[Phys. Rev. C 93, 065501] Published Fri Jun 10, 2016

]]>The ${f}_{1}\left(1285\right)$ meson with mass $1281.0\pm 0.8$ MeV/${c}^{2}$ and width $18.4\pm 1.4$ MeV (full width at half maximum) was measured for the first time in photoproduction from a proton target using CLAS at Jefferson Lab. Differential cross sections were obtained via the $\eta {\pi}^{+}{\pi}^{-},\phantom{\rule{0.28em}{0ex}}{K}^{+}{\overline{K}}^{0}{\pi}^{-}$, and ${K}^{-}{K}^{0}{\pi}^{+}$ decay channels from thre…

[Phys. Rev. C 93, 065202] Published Thu Jun 09, 2016

]]>The structure of ${}^{210}\mathrm{Fr}$ has been established up to an excitation energy of $\sim 5.5$ MeV and spins of $\sim 25\hslash $, via time-correlated $\gamma $-ray spectroscopy and using the ${}^{197}\mathrm{Au}$(${}^{18}\mathrm{O},5n$)${}^{210}\mathrm{Fr}$ reaction with pulsed beams at an energy of 97 MeV. A significantly different level scheme has been obtained compared to previo…

[Phys. Rev. C 93, 064309] Published Wed Jun 08, 2016

]]>**Background:** Complete fusion cross sections in collisions of light weakly bound nuclei and high-$Z$ targets show suppression of complete fusion at above-barrier energies. This has been interpreted as resulting from the breakup of the weakly bound nucleus prior to reaching the fusion barrier, reducing t…

[Phys. Rev. C 93, 064604] Published Wed Jun 08, 2016

]]>The half-lives of deformed cluster emission have been calculated by using the proximity potential Christensen-Winther potential form (1976) and compared to the experimental data and theoretical results of the liquid drop model. Also the calculated results have been compared to the results obtained b…

[Phys. Rev. C 93, 064605] Published Wed Jun 08, 2016

]]>**Background:** Measurements of polarization observables for the reactions $\stackrel{\u20d7}{\gamma}p\to {K}^{+}\mathrm{\Lambda}$ and $\stackrel{\u20d7}{\gamma}p\to {K}^{+}{\mathrm{\Sigma}}^{0}$ have been performed. This is part of a program of measurements designed to study the spectrum of baryon resonances in particular, and nonperturbative QCD in general.

**Purpose:** The accurate measurement of sever…

[Phys. Rev. C 93, 065201] Published Wed Jun 08, 2016

]]>Nucleonic matter is described within an SU(2) extended Nambu–Jona-Lasinio (NJL) model. Several parametrizations with different nuclear matter saturation properties are proposed. At subsaturation, nuclear pasta phases are calculated within two methods: the coexistence-phases approximation and the com…

[Phys. Rev. C 93, 065805] Published Wed Jun 08, 2016

]]>We perform a detailed analysis of the properties of the finite-range tensor term associated with the Gogny and M3Y effective interactions. In particular, by using a partial-wave decomposition of the equation of state of symmetric nuclear matter, we show how we can extract their tensor parameters dir…

[Phys. Rev. C 93, 064001] Published Tue Jun 07, 2016

]]>The particle-hole symmetry (equivalence) of the full shell-model Hilbert space is straightforward and routinely used in practical calculations. In this work I show that this symmetry is preserved in the subspace truncated up to a certain generalized seniority and give the explicit transformation bet…

[Phys. Rev. C 93, 064307] Published Tue Jun 07, 2016

]]>We have performed the ${}^{70}\mathrm{Zn}(d,{}^{3}\mathrm{He}){}^{69}\mathrm{Cu}$ proton pick-up reaction in direct kinematics using a deuteron beam at 27 MeV. The outgoing ${}^{3}\mathrm{He}$ particles were detected at the focal-plane detection system of an Enge split-pole spectrometer. The excitation-energy spectrum was reconstructed up to 7 MeV and spectr…

[Phys. Rev. C 93, 064308] Published Tue Jun 07, 2016

]]>We compute the isospin-asymmetry dependence of microscopic optical model potentials from realistic chiral two- and three-body interactions over a range of resolution scales $\mathrm{\Lambda}\simeq 400\u2013500$ MeV. We show that at moderate projectile energies, $E=110\u2013200$ MeV, the real isovector part of the optical potential ch…

[Phys. Rev. C 93, 064603] Published Tue Jun 07, 2016

]]>The ${}^{11}\mathrm{C}{(\alpha ,p)}^{14}\mathrm{N}$ reaction is an important $\alpha $-induced reaction competing with $\beta $-limited hydrogen-burning processes in high-temperature explosive stars. We directly measured its reaction cross sections both for the ground-state transition $(\alpha ,{p}_{0})$ and the excited-state transitions $(\alpha ,{p}_{1})$ and $(\alpha ,{p}_{2})$ at rel…

[Phys. Rev. C 93, 065802] Published Tue Jun 07, 2016

]]>Using an array of high-purity Compton-suppressed germanium detectors, we performed an independent measurement of the $\beta $-decay branching ratio from ${}^{12}\mathrm{B}$ to the second-excited state, also known as the Hoyle state, in ${}^{12}\mathrm{C}$. Our result is $0.64\left(11\right)\%$, which is a factor $\sim 2$ smaller than the previously establis…

[Phys. Rev. C 93, 065803] Published Tue Jun 07, 2016

]]>**Background:** Because of its half-life of about 35 million years, ${}^{92}\text{Nb}$ is considered as a chronometer for nucleosynthesis events prior to the birth of our sun. The abundance of ${}^{92}\text{Nb}$ in the early solar system can be derived from meteoritic data. It has to be compared to theoretical estimates for the pr…

[Phys. Rev. C 93, 065804] Published Tue Jun 07, 2016

]]>Knowledge of the nuclear level density is necessary for understanding various reactions, including those in the stellar environment. Usually the combinatorics of a Fermi gas plus pairing is used for finding the level density. Recently a practical algorithm avoiding diagonalization of huge matrices w…

[Phys. Rev. C 93, 064304] Published Mon Jun 06, 2016

]]>High-spin states in ${}^{134}\mathrm{Ce}$ have been investigated using the ${}^{116}\mathrm{Cd}({}^{22}\mathrm{Ne},4n)$ reaction and the Gammasphere array. The level scheme has been extended to an excitation energy of $\sim 30$ MeV and spin $\sim 54\phantom{\rule{0.16em}{0ex}}\hslash $. Two new dipole bands and four new sequences of quadrupole transitions were identified. Several new transi…

[Phys. Rev. C 93, 064305] Published Mon Jun 06, 2016

]]>The nuclear matrix elements (NMEs) corresponding to the neutrinoless double-$\beta $ ($0\nu \beta \beta $) decays to excited ${0}^{+}$ states of major experimental interest are calculated. All these decay transitions are electron emitting ($0\nu {\beta}^{-}{\beta}^{-}$ decays) and take place in the mass $A=76,82,96,100,110,116,124,130,136$ nuclei. This…

[Phys. Rev. C 93, 064306] Published Mon Jun 06, 2016

]]>Fission fragment mass distributions in the reactions ${}^{11}\mathrm{B}+\phantom{\rule{0.16em}{0ex}}{}^{232}\mathrm{Th}$ and ${}^{11}\mathrm{B}+\phantom{\rule{0.16em}{0ex}}{}^{243}\mathrm{Am}$ were measured in an energy range around the barrier. No sudden change in the width of the mass distribution as a function of center-of-mass energy was observed at near-barrier energies, indicating no quasifission transition…

[Phys. Rev. C 93, 064602] Published Mon Jun 06, 2016

]]>Higher-order anisotropic flows in heavy-ion collisions are affected by nonlinear mode coupling effects. It has been suggested that the associated nonlinear hydrodynamic response coefficients probe the transport properties and are largely insensitive to the spectrum of initial density fluctuations of…

[Phys. Rev. C 93, 064901] Published Mon Jun 06, 2016

]]>Heavy-ion collisions at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory and the Large Hadron Collider at CERN probe matter at extreme conditions of temperature and energy density. Most of the global properties of the collisions can be extracted from the measurements of charged-…

[Phys. Rev. C 93, 064902] Published Mon Jun 06, 2016

]]>We introduce a generalized relaxation-time-approximation form of the collision term in the Boltzmann kinetic equation that allows for using different relaxation times for elastic and inelastic collisions. The efficacy of the proposed framework is demonstrated with the numerical calculations that des…

[Phys. Rev. C 93, 064903] Published Mon Jun 06, 2016

]]>A recent paper by Id Betan and Nazarewicz reopened the problem of the absolute width of the $\alpha $ decay leading to a doubly magic nucleus. I point out a problematic aspect of this work, and reaffirm the correctness of the classical results.

[Phys. Rev. C 93, 069801] Published Mon Jun 06, 2016

]]>We reply to the Comment by Lovas, which concerns the shell model calculations of the $\alpha $-decay width of ${}^{212}\mathrm{Po}$. In the Comment, the author claims that the $\alpha $-formation amplitudes obtained in our work “look unusual.” Here we reaffirm the results and conclusions of our original article.

[Phys. Rev. C 93, 069802] Published Mon Jun 06, 2016

]]>[Phys. Rev. C 93, 069901] Published Mon Jun 06, 2016

]]>[Phys. Rev. C 93, 069902] Published Mon Jun 06, 2016

]]>In an experiment with the RIKEN projectile fragment separator called BigRIPS at the RIKEN Nishina Center, the fragmentation of a ${}^{78}\mathrm{Kr}$ beam allowed the observation of new neutron-deficient isotopes at the proton drip line. Clean identification spectra could be produced and ${}^{63}\mathrm{Se},\phantom{\rule{0.16em}{0ex}}{}^{67}\mathrm{Kr}$, and ${}^{68}\mathrm{Kr}$ were id…

[Phys. Rev. C 93, 061301(R)] Published Thu Jun 02, 2016

]]>We study the interplay of quadrupole and octupole degrees of freedom in the structure of the isotope ${}^{144}\mathrm{Ba}$. A symmetry-conserving configuration-mixing method (SCCM) based on a Gogny energy density functional (EDF) has been used. The method includes particle number, parity, and angular momentum resto…

[Phys. Rev. C 93, 061302(R)] Published Thu Jun 02, 2016

]]>The $\gamma $-ray strength functions and level densities of ${}^{73,74}\mathrm{Ge}$ have been extracted up to the neutron-separation energy ${S}_{n}$ from particle-$\gamma $ coincidence data using the Oslo method. Moreover, the $\gamma $-ray strength function of ${}^{74}\mathrm{Ge}$ above ${S}_{n}$ has been determined from photoneutron measurements; hence these two ex…

[Phys. Rev. C 93, 064302] Published Thu Jun 02, 2016

]]>The model dependence in the correlations of the neutron-skin thickness in heavy nuclei with various symmetry-energy parameters is analyzed by using several families of systematically varied microscopic mean-field models. Such correlations show a varying degree of model dependence once the results fo…

[Phys. Rev. C 93, 064303] Published Thu Jun 02, 2016

]]>The properties of nuclear matter are relevant for many astrophysical systems and determine the signatures of emitted neutrinos and gravitational waves. This work connects $a\phantom{\rule{0}{0ex}}b$-$i\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}o$ calculations in the low-density regime with phenomenological mean-field approaches commonly used at high density. It will allow for improved equations of state over the whole range of conditions relevant for astrophysical applications. These include the description of neutrino reactions in core-collapse supernovae and binary neutron star mergers and a better characterization of the emitted gravitational waves.

[Phys. Rev. C 93, 065801] Published Thu Jun 02, 2016

]]>Excited states in ${}^{125}\mathrm{Cs}$ have been studied with the fusion-evaporation-reaction ${}^{116}\mathrm{Cd}({}^{14}\mathrm{N},5n)$ at 65-MeV beam energy. The level scheme of ${}^{125}\mathrm{Cs}$ was extended with the addition of more than 50 new *γ* transitions and with the identification of two new rotational bands built on the $\pi {d}_{5/2}$ and $\pi {g}_{7/2}$ configur…

[Phys. Rev. C 93, 064301] Published Wed Jun 01, 2016

]]>A detailed knowledge of the light ions interaction processes with matter is of great interest in basic and applied physics. As an example, particle therapy and space radioprotection require highly accurate fragmentation cross-section measurements to develop shielding materials and estimate acute and…

[Phys. Rev. C 93, 064601] Published Wed Jun 01, 2016

]]>Measurements of the anisotropic flow coefficients ${v}_{2}\left\{{\mathrm{\Psi}}_{2}\right\},\phantom{\rule{0.28em}{0ex}}{v}_{3}\left\{{\mathrm{\Psi}}_{3}\right\},\phantom{\rule{0.28em}{0ex}}{v}_{4}\left\{{\mathrm{\Psi}}_{4}\right\}$, and ${v}_{4}\left\{{\mathrm{\Psi}}_{2}\right\}$ for identified particles (${\pi}^{\pm},\phantom{\rule{0.28em}{0ex}}{K}^{\pm}$, and $p+\overline{p}$) at midrapidity, obtained relative to the event planes ${\mathrm{\Psi}}_{m}$ at forward rapidities in Au + Au collisions at $\sqrt{{s}_{{}_{NN}}}=200\phantom{\rule{0.28em}{0ex}}\mathrm{GeV}$, are presented as a function of collision centrality and pa…

[Phys. Rev. C 93, 051902(R)] Published Tue May 31, 2016

]]>I have calculated spectroscopic factors connecting three $d$ resonances in ${}^{13}\mathrm{Be}$ to the three lowest states of ${}^{12}\mathrm{Be}$. Combined with single-particle widths computed in a potential model, I have estimated the widths expected for the various decays. Comparing measured and calculated widths suggests that th…

[Phys. Rev. C 93, 054327] Published Tue May 31, 2016

]]>The shell structure of low-lying neutron resonance levels in axially symmetric quadrupole-deformed potentials is discussed, which seems analogous to that of weakly bound neutrons. As numerical examples, nuclei slightly outside the neutron drip line, ${}_{12}{}^{39}\mathrm{Mg}_{27}$ and ${}_{6}{}^{21}\mathrm{C}_{15}$, are studied. For the lowest r…

[Phys. Rev. C 93, 054328] Published Tue May 31, 2016

]]>Based on a generalized relativistic mean-field model, $\alpha $ clustering on the surface of Sn was recently predicted to vary systematically as a function of isotopic mass. Existing experimental information from $\left(d,{}^{6}\mathrm{Li}\right)$ cluster pickup is now used to verify the predicted trend. The extent of the anticipated…

[Phys. Rev. C 93, 054329] Published Tue May 31, 2016

]]>The spectral degeneracies emerging in the critical region of the interacting boson model are systematically investigated. The results indicate that the level crossings in the transitions from the U(5) to the SU(3) quasidynamical symmetry can induce the approximate spectral degeneracies along the fir…

[Phys. Rev. C 93, 054330] Published Tue May 31, 2016

]]>We performed a $\gamma $-particle coincidence experiment for the ${}^{60}\text{Ni}+\phantom{\rule{0.16em}{0ex}}{}^{116}\text{Sn}$ system to investigate whether the population of the two-neutron pickup channel leading to ${}^{62}\text{Ni}$ is mainly concentrated in the ground-state transition, as has been found in a previous work [D. Montanari *et al.*, Phys. Rev. Lett. **113**, 0…

[Phys. Rev. C 93, 054623] Published Tue May 31, 2016

]]>We investigate ratios of the elastic scattering cross section to Rutherford cross section, ${P}_{\mathrm{E}}$, and angular distributions of breakup cross section by using an optical model which exploits various long-range dynamic polarization potentials as well as short-range nuclear bare potentials for the ${}^{11}\text{Be}$ pr…

[Phys. Rev. C 93, 054624] Published Tue May 31, 2016

]]>Using the standard Lagrangian of gluons and a model of dual superconductor for magnetic monopoles, I calculate the number densities of the gluons and monopoles produced by the decay of background color electric $E$ and magnetic $B$ fields (glasma). It turns out that gluons are dominant decay products wh…

[Phys. Rev. C 93, 054912] Published Tue May 31, 2016

]]>**Background:** The proton charge radius extracted from recent muonic hydrogen Lamb shift measurements is significantly smaller than that extracted from atomic hydrogen and electron scattering measurements. The discrepancy has become known as the proton radius puzzle.

**Purpose:** In an attempt to understan…

[Phys. Rev. C 93, 055207] Published Tue May 31, 2016

]]>It is demonstrated how the use of all existing experimental information on electric and magnetic nucleon form factors, described by the unitary and analytic (U&A) nucleon electromagnetic structure model in spacelike and timelike regions simultaneously, can provide numerical values of ${f}^{F},{f}^{D},\phantom{\rule{4.pt}{0ex}}\text{and}\phantom{\rule{4.pt}{0ex}}{f}^{S}$ cou…

[Phys. Rev. C 93, 055208] Published Tue May 31, 2016

]]>The $\gamma p\to {\pi}^{0}p$ reaction was studied at laboratory photon energies from 425 to 1445 MeV with a transversely polarized target and a longitudinally polarized beam. The beam-target asymmetry $F$ was measured for the first time and new high precision data for the target asymmetry $T$ were obtained. The experimen…

[Phys. Rev. C 93, 055209] Published Tue May 31, 2016

]]>In their recent study Neelam, Shubhchintak, and Chatterjee have claimed that “it would certainly be useful to perform a Coulomb dissociation experiment to find the low-energy capture cross section for the reaction” ${}^{15}\mathrm{N}$($n,\gamma $)${}^{16}\mathrm{N}$. However, it is obvious that a Coulomb dissociation experiment cannot con…

[Phys. Rev. C 93, 059801] Published Tue May 31, 2016

]]>[Phys. Rev. C 93, 059802] Published Tue May 31, 2016

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