Suppression of resonant auger effect with chirped x-ray free-electron laser pulse

被引：3
|
作者：
Sun, Yu-Ping [1 ]
Miao, Quan [2 ]
Zhou, Ai-Ping [1 ]
Liu, Rui-Jin [1 ]
Liu, Bo [1 ]
Gel'mukhanov, Faris [3 ,4 ]
机构：
[1] Shandong Univ Technol, Sch Phys & Optoelect Engn, Zibo 250049, Peoples R China
[2] Shandong Univ Sci & Technol, Coll Elect Commun & Phys, Qingdao 266590, Peoples R China
[3] Royal Inst Technol, Sch Biotechnol, Theoret Chem & Biol, Roslagstullsbacken 15, SE-10691 Stockholm, Sweden
[4] Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2018年 / 51卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Auger yield; chirped pulse; x-ray free-electron laser; AR;
D O I：
10.1088/1361-6455/aa9784
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the Auger effect in the presence of strong x-ray free-electron lasers (XFELs) propagating through resonant argon vapors by solving the Maxwell-Bloch equations numerically. The simulations are based on the three-level system with the carrier frequency tuned in the 2p(3/2)-4s resonance. It is shown that the Auger branching is sensitive to the pulse area and duration. The relative Auger yield can be suppressed in the course of pulse propagation due to the interplay between the Auger decay and stimulated emission. Further suppression can be achieved by chirping the initial pulse, which is more effective for the long-pulse case. In addition, the sign and magnitude of the chirp rate play important roles in pulse reshaping and Auger emission.
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页数：7
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