http://pra.aps.org/ Recently published articles in Phys. Rev. A in the Table of Content section "Atomic and molecular collisions and interactions" en-us Copyright (c) 2009 The American Physical Society 2009-11-22T06:19:14-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-22T06:19:14-05:00 rss@aps.org http://link.aps.org/doi/10.1103/PhysRevA.80.052710 Author(s): S. d’A. Sanchez, M. A. P. Lima, and M. T. do N. Varella<br/>We present a theory of vibrationally enhanced positron annihilation on molecules based on the Feshbach projection operator formalism. A key aspect of the present approach is the fact that no direct vibrational excitation is assumed, i.e., the attachment mechanism is electronic in nature, arising fro...<br/>[Phys. Rev. A 80, 052710] Published Fri Nov 20, 2009 S. d’A. Sanchez, M. A. P. Lima, and M. T. do N. Varella 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052710 Phys. Rev. A 80, 052710 text/html article Physical Review A 80 5 2009-11-20T00:00:00-05:00 052710 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052709 Author(s): M. Fuss, A. Muñoz, J. C. Oller, F. Blanco, D. Almeida, P. Limão-Vieira, T. P. D. Do, M. J. Brunger, and G. García<br/>In this paper, we report on total electron tetrahydrofuran (C_{4} H_{8} O) scattering cross-section measurements for energies in the range from 50 to 5000 eV with experimental errors of about 5%. In addition, integral elastic and inelastic cross sections have been calculated over a broad energy rang...<br/>[Phys. Rev. A 80, 052709] Published Thu Nov 19, 2009 M. Fuss, A. Muñoz, J. C. Oller, F. Blanco, D. Almeida, P. Limão-Vieira, T. P. D. Do, M. J. Brunger, and G. García 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052709 Phys. Rev. A 80, 052709 text/html article Physical Review A 80 5 2009-11-19T00:00:00-05:00 052709 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052708 Author(s): Christopher J. Bostock, Dmitry V. Fursa, and Igor Bray<br/>We report on the extension of the recently formulated relativistic convergent close-coupling (RCCC) method to include the Breit and Møller interactions. The inclusion of these relativistic effects ensures that the RCCC method is now capable of calculating electron scattering excitation and ionizati...<br/>[Phys. Rev. A 80, 052708] Published Wed Nov 18, 2009 Christopher J. Bostock, Dmitry V. Fursa, and Igor Bray 2009-11-18T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052708 Phys. Rev. A 80, 052708 text/html article Physical Review A 80 5 2009-11-18T00:00:00-05:00 052708 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052707 Author(s): A. B. Voitkiv<br/>We consider electron capture in fast collisions between a proton and hydrogen in the presence of an intense x-ray laser whose angular frequency ω is close to v^{2} /2 , where v is the collision velocity. We show that in such a case laser-induced capture becomes possible and that the latter proceeds...<br/>[Phys. Rev. A 80, 052707] Published Wed Nov 18, 2009 A. B. Voitkiv 2009-11-18T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052707 Phys. Rev. A 80, 052707 text/html article Physical Review A 80 5 2009-11-18T00:00:00-05:00 052707 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052706 Author(s): M. S. Pindzola, J. A. Ludlow, F. Robicheaux, J. Colgan, and C. J. Fontes<br/>A fully relativistic time-dependent close-coupling method is developed based on Dirac’s covariant formulation of quantum mechanics. The expansion of a one-electron wave function in spin-orbit eigenfunctions yields the well-known coupled Dirac equations in two radial wave functions, while the expan...<br/>[Phys. Rev. A 80, 052706] Published Fri Nov 13, 2009 M. S. Pindzola, J. A. Ludlow, F. Robicheaux, J. Colgan, and C. J. Fontes 2009-11-13T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052706 Phys. Rev. A 80, 052706 text/html article Physical Review A 80 5 2009-11-13T00:00:00-05:00 052706 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052705 Author(s): Patrick Raab and Harald Friedrich<br/>For deep potentials with attractive tails proportional to −1/r^{4} , as occur in the interaction between a charged ion and a neutral polarizable atom (or molecule), we present an analytical expression for the tail contribution to the quantization function F(E) which determines the near-threshold b...<br/>[Phys. Rev. A 80, 052705] Published Tue Nov 10, 2009 Patrick Raab and Harald Friedrich 2009-11-10T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052705 Phys. Rev. A 80, 052705 text/html article Physical Review A 80 5 2009-11-10T00:00:00-05:00 052705 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052704 Author(s): Hema Munjal and K. L. Baluja<br/>Differential, integral, and momentum-transfer cross sections for the elastic scattering of electrons by SiF_{2} have been calculated for the incident electron energy range of 0–10 eV. These results are obtained by using the R -matrix method. The close-coupling expansion of the wave function of the...<br/>[Phys. Rev. A 80, 052704] Published Fri Nov 06, 2009 Hema Munjal and K. L. Baluja 2009-11-06T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052704 Phys. Rev. A 80, 052704 text/html article Physical Review A 80 5 2009-11-06T00:00:00-05:00 052704 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052703 Author(s): S. Blatt, J. W. Thomsen, G. K. Campbell, A. D. Ludlow, M. D. Swallows, M. J. Martin, M. M. Boyd, and J. Ye<br/>We investigate the influence of atomic motion on precision Rabi spectroscopy of ultracold fermionic atoms confined in a deep one-dimensional optical lattice. We analyze the spectral components of longitudinal sideband spectra and present a model to extract information about the transverse motion and...<br/>[Phys. Rev. A 80, 052703] Published Fri Nov 06, 2009 S. Blatt, J. W. Thomsen, G. K. Campbell, A. D. Ludlow, M. D. Swallows, M. J. Martin, M. M. Boyd, and J. Ye 2009-11-06T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052703 Phys. Rev. A 80, 052703 text/html article Physical Review A 80 5 2009-11-06T00:00:00-05:00 052703 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052702 Author(s): Christopher Ticknor<br/>We characterize the long-range dipolar scattering in two dimensions. We use the analytic zero energy wave function including the dipolar interaction; this solution yields universal dipolar scattering properties in the threshold regime. We also study the semiclassical dipolar scattering and find univ...<br/>[Phys. Rev. A 80, 052702] Published Thu Nov 05, 2009 Christopher Ticknor 2009-11-05T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052702 Phys. Rev. A 80, 052702 text/html article Physical Review A 80 5 2009-11-05T00:00:00-05:00 052702 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.052701 Author(s): X. R. Zou, J. X. Shao, X. M. Chen, Y. Cui, Z. M. Gao, Y. Z. Yin, B. W. Ding, Z. Li, and D. Y. Yu<br/>Target ionization and projectile charge changing were investigated for 20–500 keV/u C^{q+} , O^{q+} +He (q=1–3) collisions. Double- to single-ionization ratios R_{21} of helium associated with no projectile charge change (direct ionization), single-electron capture, and single-electron loss were...<br/>[Phys. Rev. A 80, 052701] Published Wed Nov 04, 2009 X. R. Zou, J. X. Shao, X. M. Chen, Y. Cui, Z. M. Gao, Y. Z. Yin, B. W. Ding, Z. Li, and D. Y. Yu 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052701 Phys. Rev. A 80, 052701 text/html article Physical Review A 80 5 2009-11-04T00:00:00-05:00 052701 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.050702 Author(s): C. Beilmann, O. Postavaru, L. H. Arntzen, R. Ginzel, C. H. Keitel, V. Mäckel, P. H. Mokler, M. C. Simon, H. Tawara, I. I. Tupitsyn, J. Ullrich, J. R. Crespo López-Urrutia, and Z. Harman<br/>We report the observation of trielectronic recombination with simultaneous excitation of a K -shell and an L -shell electron, hence involving three active electrons. This process was identified in the x-ray emission spectrum of recombining highly charged Kr ions. An energy resolution three times hig...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. A 80, 050702] Published Wed Nov 04, 2009 C. Beilmann, O. Postavaru, L. H. Arntzen, R. Ginzel, C. H. Keitel, V. Mäckel, P. H. Mokler, M. C. Simon, H. Tawara, I. I. Tupitsyn, J. Ullrich, J. R. Crespo López-Urrutia, and Z. Harman 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.050702 Phys. Rev. A 80, 050702 text/html article Physical Review A 80 5 2009-11-04T00:00:00-05:00 050702 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.050701 Author(s): A. M. Kaufman, R. P. Anderson, Thomas M. Hanna, E. Tiesinga, P. S. Julienne, and D. S. Hall<br/>We demonstrate and theoretically analyze the dressing of several proximate Feshbach resonances in ^{87} Rb using radio-frequency (rf) radiation. We present accurate measurements and characterizations of the resonances, and the dramatic changes in scattering properties that can arise through the rf d...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. A 80, 050701] Published Tue Nov 03, 2009 A. M. Kaufman, R. P. Anderson, Thomas M. Hanna, E. Tiesinga, P. S. Julienne, and D. S. Hall 2009-11-03T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.050701 Phys. Rev. A 80, 050701 text/html article Physical Review A 80 5 2009-11-03T00:00:00-05:00 050701 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042711 Author(s): M. Y. Şengül, M. C. Güçlü, and S. Fritzsche<br/>The bound-free electron-positron pair production is considered for relativistic heavy ion collisions. In particular, cross sections are calculated for the pair production with the simultaneous capture of the electron into the 1s ground state of one of the ions and for energies that are relevant for ...<br/>[Phys. Rev. A 80, 042711] Published Mon Oct 26, 2009 M. Y. Şengül, M. C. Güçlü, and S. Fritzsche 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042711 Phys. Rev. A 80, 042711 text/html article Physical Review A 80 4 2009-10-26T00:00:00-04:00 042711 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042710 Author(s): S. A. Napier, D. Cvejanović, P. D. Burrow, J. F. Williams, J. A. Michejda, and L. Pravica<br/>The energies, widths, and angular behavior of negative-ion resonances in zinc atoms are determined using the complementary experimental techniques of electron transmission and angular differential elastic scattering. The observed resonances include states formed by the excitation of an inner 3d elec...<br/>[Phys. Rev. A 80, 042710] Published Thu Oct 22, 2009 S. A. Napier, D. Cvejanović, P. D. Burrow, J. F. Williams, J. A. Michejda, and L. Pravica 2009-10-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042710 Phys. Rev. A 80, 042710 text/html article Physical Review A 80 4 2009-10-22T00:00:00-04:00 042710 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042709 Author(s): Tsutomu Watanabe, Andrew T. Domondon, and Xiao-Min Tong<br/>We investigate the energy-loss spectra of high-energy electrons incident on Ar atoms using linear density response theory with a self-interaction correction. The energy region of the spectra covers from 24.5 to 30.0 eV, where many ns , np , and nd autoionizing resonant states from the 3s orbital of ...<br/>[Phys. Rev. A 80, 042709] Published Fri Oct 16, 2009 Tsutomu Watanabe, Andrew T. Domondon, and Xiao-Min Tong 2009-10-16T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042709 Phys. Rev. A 80, 042709 text/html article Physical Review A 80 4 2009-10-16T00:00:00-04:00 042709 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042708 Author(s): F. Guzmán, L. F. Errea, and B. Pons<br/>We introduce two active-electron classical trajectory Monte Carlo models for ion-He collisions, in which the electron-electron force is smoothed using a Gaussian kernel approximation for the pointwise classical particles. A first model uses independent pairs of Gaussian electrons, while a second one...<br/>[Phys. Rev. A 80, 042708] Published Fri Oct 16, 2009 F. Guzmán, L. F. Errea, and B. Pons 2009-10-16T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042708 Phys. Rev. A 80, 042708 text/html article Physical Review A 80 4 2009-10-16T00:00:00-04:00 042708 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042707 Author(s): M. M. Sant’Anna, A. C. F. Santos, L. F. S. Coelho, Ginette Jalbert, N. V. de Castro Faria, F. Zappa, P. Focke, and Dž. Belkić<br/>We have measured double-electron capture cross sections for Li^{3+} projectiles and He targets in the 2.0–5.5 MeV energy range (3.4–5.6 a.u. velocity range). Double-electron-capture cross sections for this collision system were measured before, but only at relatively lower energies. There is a g...<br/>[Phys. Rev. A 80, 042707] Published Thu Oct 15, 2009 M. M. Sant’Anna, A. C. F. Santos, L. F. S. Coelho, Ginette Jalbert, N. V. de Castro Faria, F. Zappa, P. Focke, and Dž. Belkić 2009-10-15T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042707 Phys. Rev. A 80, 042707 text/html article Physical Review A 80 4 2009-10-15T00:00:00-04:00 042707 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042706 Author(s): J. Glosík, I. Korolov, R. Plašil, T. Kotrík, P. Dohnal, O. Novotný, J. Varju, Š. Roučka, Chris H. Greene, and V. Kokoouline<br/>An experimental study is reported about the recombination of D _{3} ^{+} ions with electrons in a low-temperature plasma (200–300 K) consisting of He with a small admixture of D_{2} . At several temperatures, the pressure dependence of the apparent binary recombination rate coefficient (α_{eff} )...<br/>[Phys. Rev. A 80, 042706] Published Wed Oct 14, 2009 J. Glosík, I. Korolov, R. Plašil, T. Kotrík, P. Dohnal, O. Novotný, J. Varju, Š. Roučka, Chris H. Greene, and V. Kokoouline 2009-10-14T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042706 Phys. Rev. A 80, 042706 text/html article Physical Review A 80 4 2009-10-14T00:00:00-04:00 042706 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042705 Author(s): Markus Müller and Ingrid Rotter<br/>We study transmission through a system with N=10 states coupled to K=2 continua of scattering wave functions in the framework of the S matrix theory by using the Feshbach projection operator formalism for open quantum systems. Due to the coupling of the system (being localized in space) to the (exte...<br/>[Phys. Rev. A 80, 042705] Published Wed Oct 14, 2009 Markus Müller and Ingrid Rotter 2009-10-14T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042705 Phys. Rev. A 80, 042705 text/html article Physical Review A 80 4 2009-10-14T00:00:00-04:00 042705 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042704 Author(s): Satoshi Tojo, Taro Hayashi, Tatsuyoshi Tanabe, Takuya Hirano, Yuki Kawaguchi, Hiroki Saito, and Masahito Ueda<br/>We studied spin-dependent two-body inelastic collisions in F=2 ^{87} Rb Bose-Einstein condensates both experimentally and theoretically. The ^{87} Rb condensates were confined in an optical trap and selectively prepared in various spin states in the F=2 manifold at a magnetic field of 3.0 G. The mea...<br/>[Phys. Rev. A 80, 042704] Published Mon Oct 12, 2009 Satoshi Tojo, Taro Hayashi, Tatsuyoshi Tanabe, Takuya Hirano, Yuki Kawaguchi, Hiroki Saito, and Masahito Ueda 2009-10-12T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042704 Phys. Rev. A 80, 042704 text/html article Physical Review A 80 4 2009-10-12T00:00:00-04:00 042704 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042703 Author(s): A. P. Kouzov and M. Chrysos<br/>The diagrammatic theory, developed recently by the authors [Phys. Rev. A 74, 012732 (2006)], is applied to binary collision-induced properties, with emphasis on induced dipole moments. Assuming rototranslational dynamics to be classical and using irreducible spherical tensor formalism, exact analyti...<br/>[Phys. Rev. A 80, 042703] Published Thu Oct 08, 2009 A. P. Kouzov and M. Chrysos 2009-10-08T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042703 Phys. Rev. A 80, 042703 text/html article Physical Review A 80 4 2009-10-08T00:00:00-04:00 042703 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042702 Author(s): M. S. Schöffler, J. N. Titze, L. Ph. H. Schmidt, T. Jahnke, O. Jagutzki, H. Schmidt-Böcking, and R. Dörner<br/>We have measured the projectile scattering-angle dependency for various electronic final states for single-electron capture in p+He and ^{3} He^{+} +He collisions at incident energies between 60 and 630 keV/u. We find pronounced peak structures in the scattering-angle dependence of some of the ratio...<br/>[Phys. Rev. A 80, 042702] Published Tue Oct 06, 2009 M. S. Schöffler, J. N. Titze, L. Ph. H. Schmidt, T. Jahnke, O. Jagutzki, H. Schmidt-Böcking, and R. Dörner 2009-10-06T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042702 Phys. Rev. A 80, 042702 text/html article Physical Review A 80 4 2009-10-06T00:00:00-04:00 042702 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.042701 Author(s): Savinder Kaur and K. L. Baluja<br/>We have carried out a comprehensive study of electron-impact on AlH molecule using the R -matrix method. Elastic (integrated and differential), momentum-transfer, excitation, and ionization cross sections along with rate coefficients have been presented at various levels of approximation. The target...<br/>[Phys. Rev. A 80, 042701] Published Thu Oct 01, 2009 Savinder Kaur and K. L. Baluja 2009-10-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.042701 Phys. Rev. A 80, 042701 text/html article Physical Review A 80 4 2009-10-01T00:00:00-04:00 042701 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.040702 Author(s): A. N. Wenz, T. Lompe, T. B. Ottenstein, F. Serwane, G. Zürn, and S. Jochim<br/>We show that the recently measured magnetic field dependence of three-body loss in a three-component mixture of ultracold ^{6} Li atoms [T. B. Ottenstein , Phys. Rev. Lett. 101, 203202 (2008); J. H. Huckans , Phys. Rev. Lett. 102, 165302 (2009)] can be explained by the presence of a universal trimer...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. A 80, 040702] Published Thu Oct 01, 2009 A. N. Wenz, T. Lompe, T. B. Ottenstein, F. Serwane, G. Zürn, and S. Jochim 2009-10-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.040702 Phys. Rev. A 80, 040702 text/html article Physical Review A 80 4 2009-10-01T00:00:00-04:00 040702 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.040701 Author(s): T. V. Tscherbul, A. A. Buchachenko, A. Dalgarno, M.-J. Lu, and J. D. Weinstein<br/>We present a combined experimental and theoretical study of angular momentum depolarization in cold collisions of ^{2} P atoms in the presence of an external magnetic field. We show that collision-induced Zeeman relaxation of Ga( ^{2} P_{1/2} ) and In( ^{2} P_{1/2} ) atoms in cold ^{4} He gas is dra...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. A 80, 040701] Published Thu Oct 01, 2009 T. V. Tscherbul, A. A. Buchachenko, A. Dalgarno, M.-J. Lu, and J. D. Weinstein 2009-10-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.040701 Phys. Rev. A 80, 040701 text/html article Physical Review A 80 4 2009-10-01T00:00:00-04:00 040701 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.030703 Author(s): Peng Zhang, Alex Dalgarno, and Robin Côté<br/>We calculate the cross sections for scattering of a neutral ytterbium atom with its positive ion at energies up to 30 eV. We identify peaks in the forward direction as arising from elastic collisions and those in the backward direction as from charge transfer. We show that the total cross section fo...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. A 80, 030703] Published Mon Sep 28, 2009 Peng Zhang, Alex Dalgarno, and Robin Côté 2009-09-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.030703 Phys. Rev. A 80, 030703 text/html article Physical Review A 80 3 2009-09-28T00:00:00-04:00 030703 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.032711 Author(s): Ali Mostafazadeh<br/>A peculiar property of complex scattering potentials is the appearance of spectral singularities. These are energy eigenvalues for certain scattering states that similarly to resonance states have infinite reflection and transmission coefficients. This property reveals an interesting resonance effec...<br/>[Phys. Rev. A 80, 032711] Published Fri Sep 25, 2009 Ali Mostafazadeh 2009-09-25T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.032711 Phys. Rev. A 80, 032711 text/html article Physical Review A 80 3 2009-09-25T00:00:00-04:00 032711 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.032710 Author(s): P. Caradonna, A. Jones, C. Makochekanwa, D. S. Slaughter, J. P. Sullivan, S. J. Buckman, I. Bray, and D. V. Fursa<br/>Measurements of the grand total and positronium-formation cross sections for positrons scattered by helium within the impact energy range from 10 to 60 eV are presented. All measurements presented here use a high-resolution (∼70 meV) trap-based pulsed positron beam. Scattering is studied using a...<br/>[Phys. Rev. A 80, 032710] Published Tue Sep 22, 2009 P. Caradonna, A. Jones, C. Makochekanwa, D. S. Slaughter, J. P. Sullivan, S. J. Buckman, I. Bray, and D. V. Fursa 2009-09-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.032710 Phys. Rev. A 80, 032710 text/html article Physical Review A 80 3 2009-09-22T00:00:00-04:00 032710 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.032709 Author(s): S. T. Chourou and A. E. Orel<br/>Previous experimental and theoretical studies on HCN and HNC have indicated the presence of both σ and π low-lying shape resonances. The energy and autoionization width of these resonant states depend on the stretching and bending of the molecule and lead primarily to a (CN^{−} +H) product. In t...<br/>[Phys. Rev. A 80, 032709] Published Mon Sep 21, 2009 S. T. Chourou and A. E. Orel 2009-09-21T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.032709 Phys. Rev. A 80, 032709 text/html article Physical Review A 80 3 2009-09-21T00:00:00-04:00 032709 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.032708 Author(s): Isao Shimamura, Hiroaki Wakimoto, and Akinori Igarashi<br/>Resonance states of unnatural parity P^{e} and D^{o} in the positronic atoms e^{+} H and e^{+} He^{+} are calculated and discussed in detail in terms of the coupled-channel scheme in the hyperspherical coordinate system. New resonances emerge in the analysis of the eigenphase sum. The time-delay mat...<br/>[Phys. Rev. A 80, 032708] Published Thu Sep 17, 2009 Isao Shimamura, Hiroaki Wakimoto, and Akinori Igarashi 2009-09-17T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.032708 Phys. Rev. A 80, 032708 text/html article Physical Review A 80 3 2009-09-17T00:00:00-04:00 032708 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions