中国物理B ›› 2023, Vol. 32 ›› Issue (6): 63101-063101.doi: 10.1088/1674-1056/acc3fa
Relaxation of Ne1+ 1s02s22p6np produced by resonant excitation of an ultraintense ultrafast x-ray pulse
Jie Yan(闫杰)1, Yanpeng Liu(刘彦鹏)2, Yong Hou(侯永)1, Cheng Gao(高城)1,†, Jianhua Wu(吴建华)1,‡, Jiaolong Zeng(曾交龙)1,3, and Jianmin Yuan(袁建民)1,4
- 1 Department of Physics, College of Science, National University of Defense Technology, Changsha 410073, China;
2 State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710000, China;
3 College of Science, Zhejiang University of Technology, Hangzhou 310023, China;
4 Graduate School of China Academy of Engineering Physics, Beijing 100193, China
Relaxation of Ne1+ 1s02s22p6np produced by resonant excitation of an ultraintense ultrafast x-ray pulse
Jie Yan(闫杰)1, Yanpeng Liu(刘彦鹏)2, Yong Hou(侯永)1, Cheng Gao(高城)1,†, Jianhua Wu(吴建华)1,‡, Jiaolong Zeng(曾交龙)1,3, and Jianmin Yuan(袁建民)1,4
- 1 Department of Physics, College of Science, National University of Defense Technology, Changsha 410073, China;
2 State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710000, China;
3 College of Science, Zhejiang University of Technology, Hangzhou 310023, China;
4 Graduate School of China Academy of Engineering Physics, Beijing 100193, China
摘要： The creation and relaxation of double $K$-hole states ${\rm 1s}^0{\rm 2s}^22{\rm p}^6n$p ($n\geq3$) of Ne$^{1+}$ in the interaction with ultraintense ultrafast x-ray pulses are theoretically investigated. The x-ray photon energies are selected so that x-rays first photoionize ${\rm 1s}^22{\rm s}^22{\rm p}^6$ of a neon atom to create a single $K$-hole state of ${\rm 1s}2{\rm s}^22{\rm p}^6$of Ne$^{1+}$, which is further excited resonantly to double $K$-hole states of $1{\rm s}^02{\rm s}^22{\rm p}^6n$p ($n\geq3$). A time-dependent rate equation is used to investigate the creation and relaxation processes of $1{\rm s}^02{\rm s}^22{\rm p}^6n$p, where the primary microscopic atomic processes including photoexcitation, spontaneous radiation, photoionization and Auger decay are considered. The calculated Auger electron energy spectra are compared with recent experimental results, which shows good agreement. The relative intensity of Auger electrons is very sensitive to the photon energy and bandwidth of x-ray pulses, which could be used as a diagnostic tool for x-ray free electron laser and atom experiments.
中图分类号: (Excitation energies and lifetimes; oscillator strengths)
- 31.15.ag