Inner-shell ionization cross sections of atoms by positron impact  

作　　者：Yuan-Cheng Wang Jia Ma Li-Guang Jiao Stephan Fritzsche 

机构地区：[1]College of Physical Science and Technology,Shenyang Normal University,Shenyang 110034,China [2]Helmholtz-Institut Jena,D-07743 Jena,Germany [3]GSI Helmholtzzentrum für Schwerionenforschung GmbH,D-64291 Darmstadt,Germany [4]College of Science,Shenyang Aerospace University,Shenyang 110136,China [5]College of Physics,Jilin University,Changchun 130012,China [6]Theoretisch-Physikalisches Institut,Friedrich-Schiller-Universität Jena,07743 Jena,Germany

出　　处：《Communications in Theoretical Physics》2024年第6期142-147,共6页理论物理通讯（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.12174147);the Chinese Scholarship Council(Grant Nos.202108210152 and 202006175016).

摘　　要：The relativistic binary-encounter-Bethe model with Wannier-type threshold law is employed to obtain the inner-shell ionization cross sections of multi-electron atoms(Ni,Cu,Y,Ag,Au,Yb,Ta,and Pb)for positron impact energies from the thresholds up to 105ke V.There is good agreement between the present calculations and the experimental data.The constant in the acceleration term derived from the Wannier law is determined to be 0.2 and 0.5 for the K-and L-shells,respectively.

关 键 词：positron scattering ionization cross section binary-encounter-Bethe model 

分 类 号：O562[理学—原子与分子物理]