中国物理B ›› 2018, Vol. 27 ›› Issue (1): 13401-013401.doi: 10.1088/1674-1056/27/1/013401
• SPECIAL TOPIC—Non-equilibrium phenomena in soft matters • 上一篇 下一篇
Plasma-screening effects on positronium formation
Jia Ma(马佳), Yuan-Cheng Wang(王远成), Ya-Jun Zhou(周雅君), Heng Wang(王珩)
- 1 College of Science, Shenyang Aerospace University, Shenyang 110136, China;
2 College of Physics Science and Technology, Shenyang Normal University, Shenyang 110034, China;
3 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
Plasma-screening effects on positronium formation
Jia Ma(马佳)1, Yuan-Cheng Wang(王远成)2, Ya-Jun Zhou(周雅君)3, Heng Wang(王珩)1
- 1 College of Science, Shenyang Aerospace University, Shenyang 110136, China;
2 College of Physics Science and Technology, Shenyang Normal University, Shenyang 110034, China;
3 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
摘要：
Plasma-screening effects on positronium (Ps) formation for positron-hydrogen collisions in a Debye plasma environment is further investigated using the screening approximation model with the inclusion of the modified structure of Ps. More accurate Ps formation cross sections (n=1, 2) are obtained for various Debye lengths from the Ps formation thresholds to 50 eV. The influence of considering modified bound-state wave functions and eigenenergies for the Ps is found to result in the reduction of the Ps formation cross sections at low energies, whereas it cannot counteract the enhancement of the Ps formation by the Debye screening.
中图分类号: (Positron scattering)
- 34.80.Uv