Fast-electron-impact study on excitations of 4d electron of xenon

doi:10.1088/1674-1056/24/12/123401

Abstract The electron energy loss spectrum of the 4d excitations of xenon was measured at an incident electron energy of 1500 eV and a scattering angle of 6°. Besides the optically allowed transitions of 4d_5/2^-1np and 4d_3/2^-1np', the optically forbidden transitions of 4_5/2^-1ns, 4d_5/2^-1nd, 4d_3/2^-1ns', and 4d_3/2^-1nd' were observed. The measured features are assigned with the help of the calculation by the Cowan Code. The line profile parameters of both optically allowed transitions and optically forbidden ones were determined and compared with the previous available data. It is found that the natural widths of both dipole-allowed and dipole-forbidden excitations are approximately identical, which means the spectator transitions dominate the resonant Auger effect for both dipole-allowed and dipole-forbidden transitions.

Keywords: electron energy loss spectrum optically forbidden transition natural width

Received: 26 June 2015
Revised: 26 August 2015
Accepted manuscript online:

PACS:	34.80.Dp	(Atomic excitation and ionization)
	32.80.Aa	(Inner-shell excitation and ionization)
	32.80.Hd	(Auger effect)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. U1332204, 11274291, 11504361, and 11320101003).

Corresponding Authors: Zhu Lin-Fan
E-mail: lfzhu@ustc.edu.cn

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Zhang Xin (张鑫), Liu Ya-Wei (刘亚伟), Peng Yi-Geng (彭裔耕), Xu Long-Quan (徐龙泉), Ni Dong-Dong (倪冬冬), Kang Xu (康旭), Wang Yang-Yang (王洋洋), Qi Yue-Ying (祁月盈), Zhu Lin-Fan (朱林繁) Fast-electron-impact study on excitations of 4d electron of xenon 2015 Chin. Phys. B 24 123401

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Fast-electron-impact study on excitations of 4d electron of xenon

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