Cross section for impact single ionization of B2+ by H+

doi:10.1088/1674-1056/22/5/053401

中国物理B ›› 2013, Vol. 22 ›› Issue (5): 53401-053401.doi: 10.1088/1674-1056/22/5/053401

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Cross section for impact single ionization of B²⁺ by H⁺

叶丹丹, 祁月盈, 胡亚华, 宁丽娜

College of Mathematics, Physics and Information Engineering, Jiaxing University, Jiaxing 314001, China

收稿日期:2012-09-16 修回日期:2012-12-22 出版日期:2013-04-01 发布日期:2013-04-01
基金资助:
Project supported by the National Basic Research Program of China (Grant No. 2013CB922200) and the National Natural Science Foundation of China (Grant Nos. 11005049, 11025417, 10979007, and 10974021).

Cross section for impact single ionization of B²⁺ by H⁺

Ye Dan-Dan (叶丹丹), Qi Yue-Ying (祁月盈), Hu Ya-Hua (胡亚华), Ning Li-Na (宁丽娜)

College of Mathematics, Physics and Information Engineering, Jiaxing University, Jiaxing 314001, China

Received:2012-09-16 Revised:2012-12-22 Online:2013-04-01 Published:2013-04-01
Contact: Qi Yue-Ying E-mail:qi_yying@yahoo.com.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2013CB922200) and the National Natural Science Foundation of China (Grant Nos. 11005049, 11025417, 10979007, and 10974021).

摘要/Abstract

摘要： The ionization process of B²⁺ by H⁺ impact is studied using the continuum-distorted-wave eikonal-initial-state (CDW-EIS) method and the modified free electron peak approximation (M-FEPA), respectively. Total, single-, and double-differential cross sections from 1s and 2s orbital are presented for the energy range from 10 KeV/u to 10 MeV/u. Comparison between the results from the two methods demonstrates that the total and single-differential cross sections for the high-energy incident projectile case can be well evaluated using the simple M-FEPA model. Moreover, the M-FEPA model reproduces the essential features of the binary-encounter (BE) bump in the double-differential cross sections. Thus, BE ionization mechanism is discussed in detail by adopting the M-FEPA model. In particular, the double- and single-differential cross sections from the 2s orbital show a high-energy hip, which is different from those from the 1s orbital. Based on Ref. [1], the Compton profiles of B²⁺ for 1s and 2s orbitals are given, and the hips in DDCS and SDCS from the 2s orbital are explained.

关键词: continuum-distorted-wave eikonal-initial-state (CDW-EIS) method, modified free electron peak approximation (M-FEPA), binary-encounter (BE) bump, Compton profile

Abstract: The ionization process of B²⁺ by H⁺ impact is studied using the continuum-distorted-wave eikonal-initial-state (CDW-EIS) method and the modified free electron peak approximation (M-FEPA), respectively. Total, single-, and double-differential cross sections from 1s and 2s orbital are presented for the energy range from 10 KeV/u to 10 MeV/u. Comparison between the results from the two methods demonstrates that the total and single-differential cross sections for the high-energy incident projectile case can be well evaluated using the simple M-FEPA model. Moreover, the M-FEPA model reproduces the essential features of the binary-encounter (BE) bump in the double-differential cross sections. Thus, BE ionization mechanism is discussed in detail by adopting the M-FEPA model. In particular, the double- and single-differential cross sections from the 2s orbital show a high-energy hip, which is different from those from the 1s orbital. Based on Ref. [1], the Compton profiles of B²⁺ for 1s and 2s orbitals are given, and the hips in DDCS and SDCS from the 2s orbital are explained.

Key words: continuum-distorted-wave eikonal-initial-state (CDW-EIS) method, modified free electron peak approximation (M-FEPA), binary-encounter (BE) bump, Compton profile

中图分类号: (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))

34.10.+x

34.50.-s (Scattering of atoms and molecules)

叶丹丹, 祁月盈, 胡亚华, 宁丽娜. Cross section for impact single ionization of B²⁺ by H⁺[J]. 中国物理B, 2013, 22(5): 53401-053401.

Ye Dan-Dan (叶丹丹), Qi Yue-Ying (祁月盈), Hu Ya-Hua (胡亚华), Ning Li-Na (宁丽娜). Cross section for impact single ionization of B²⁺ by H⁺[J]. Chin. Phys. B, 2013, 22(5): 53401-053401.

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Cross section for impact single ionization of B²⁺ by H⁺

Cross section for impact single ionization of B²⁺ by H⁺

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