Adhikari, S. K.2014-05-202014-05-202000-12-01Physical Review A. College Pk: Amer Physical Soc, v. 62, n. 6, 5 p., 2000.1050-2947http://hdl.handle.net/11449/23871Scattering of positronium (Ps) by a helium atom has been investigated in a three-Ps-state coupled-channel model including Ps(1s,2s,2p) states using a recently proposed time-reversal-symmetric regularized electron-exchange model potential. Specifically, we report results of differential cross sections for elastic scattering and target-elastic Ps excitations. We also present results for total and different partial cross sections and compare them with experiment and other calculations.5engArtigo10.1103/PhysRevA.62.062708WOS:000165697200051Acesso abertoWOS000165697200051.pdf8031087349809439