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掠入射较高功率密度驱动Ni-like AgX射线激光的理论研究
引用本文:张国平,张覃鑫,郑无敌.掠入射较高功率密度驱动Ni-like AgX射线激光的理论研究[J].强激光与粒子束,2006,18(2):210-214.
作者姓名:张国平  张覃鑫  郑无敌
作者单位:北京应用物理与计算数学研究所, 北京 100088
基金项目:国家自然科学基金;国家科技攻关项目
摘    要: 用系列程序对掠入射方式驱动亚稳态类镍银碰撞激发机制进行了研究。继低功率密度驱动获得有效增益系数为23.8 cm-1结果之后,在4.3×1013 W·cm-2较高功率密度驱动时,增益区移到驱动激光折返点附近,有效增益系数达到40 cm-1以上,比正入射提高了2.4倍。用50 J激光能量驱动单靶,就能达到有效增益长度积为40的深度饱和增益。

关 键 词:X射线激光  类镍离子  电子碰撞激发机制  亚稳态  掠入射  数值模拟
文章编号:1001-4322(2006)02-0210-05
收稿时间:2005/4/6
修稿时间:2005年4月6日

Theoretical research on Ni-like Ag X-ray laser by grazing incidence in 4.3×1013 W·cm-2
ZHANG Guo-ping,ZHANG Tan-xin,ZHENG Wu-di.Theoretical research on Ni-like Ag X-ray laser by grazing incidence in 4.3×1013 W·cm-2[J].High Power Laser and Particle Beams,2006,18(2):210-214.
Authors:ZHANG Guo-ping  ZHANG Tan-xin  ZHENG Wu-di
Institution:Institute of Applied Physics and Computational Mathematics, P.O.Box 8009, Beijing 100088, China
Abstract:An effective gain of 23.8 cm-1 has been got at 1.2×1013 W·cm-2. In this paper, using series codes, quasi-stable Ni-like Ag collisional excitation scheme driven by laser with grazing incidence is studied. Compared with normal incidence, at a drive intensity of 4.3×1013 W·cm-2, the laser energy is mainly deposited on the gain region. The electronic temperature on gain region can be dramatically increased and the gain coefficients can also be dramatically increased. Its effective gain reaches 40 cm-1, which is 3.4 times of that of normal incidence. If 50 J laser energy is used to drive a single target, deeply saturated gain with a gain length product of 40 can be got.
Keywords:X-ray laser  Ni-like ion  Scheme of electronic collision excitation  Quasi-stable state  Grazing incident  Numerical simulation
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