Auger decay including direct double processes of K-shell hollow states of Ne and the related hypersatellite radiative transitions

作者：Li, Yongjun; Liu, Liping; Gao, Cheng; Zeng, Jiaolong^*; Yuan, Jianmin

来源：Journal of Electron Spectroscopy and Related Phenomena, 2018, 226: 26-34.

DOI：10.1016/j.elspec.2018.05.003

• Hollow states
• Direct double Auger decay
• Auger spectra
• Hypersatellite radiative transitions

In this study, we theoretically investigated single and double Auger decay processes from the K-2V (V = 3s, 3p, 3d, 4s, 4p, 4d) hollow states of Ne+ in the framework of the first- and second-order perturbation theory implemented by the distorted wave approximation. The direct double Auger decay rates were calculated based on the separation of knock-out and shake-off mechanisms. Atomic data, including the transition energy, single and double Auger decay rates and natural lifetime width, are obtained and compared with the experimental and theoretical results available in the literature. The natural lifetime widths of the K-2V hollow states, including the contributions from single and direct double Auger decay, are in excellent agreement with a recent experiment. Using our theoretical results, we diagnosed the relative population fractions of the initial quantum states prepared in the experiment and interpreted the measured Auger spectra. There is an excellent agreement between the theoretical and experimental results. Finally, the hypersatellite K alpha radiative transitions relevant to these hollow states were investigated using the natural lifetime widths determined by single and direct double Auger rates.

• 出版日期2018-7
• 单位上海交通大学; 中国工程物理研究院; 中国人民解放军国防科学技术大学