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

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

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.

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

Received: 16 September 2012
Revised: 22 December 2012
Accepted manuscript online:

PACS:	34.10.+x	(General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))
	34.50.-s	(Scattering of atoms and molecules)

Fund: 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).

Corresponding Authors: Qi Yue-Ying
E-mail: qi_yying@yahoo.com.cn

Cite this article:

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⁺ 2013 Chin. Phys. B 22 053401

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