摘要
论述了隧道电离和阈上电离加热过程。并把此二过程加到一个ｎｏｎＬＴＥ平均原子模型，用此模型来研究强场下光致电离类锂氖复合机制Ｘ射线激光。计算结果表明，当驱动激光脉冲为１００ｆｓ、波长为０２４８μｍ、功率密度为２×１０１７Ｗｃｍ２，氖气的密度为１０３ｇｃｍ－３时，类锂氖精细结构跃迁３ｄ５／２→２ｐ３／２（λ＝９８）的最大增益系数约为１００ｃｍ－１，其维持时间约为１５ｐｓ。
A non LTE average atom model which has been modified to include tunnel ionisation and ATI heating is presented, and the model is applied to study the optically ionised Li like Ne recombination X ray laser. Results from the calculation show that high gain in Li like Ne at 9.8 nm can be produced with a 100 fsec duration, 0 248μm laser of intensity 2×10 17 Wcm -2 and the gas density of 10 -3 gcm -3 . The duration of X ray lasing is about 1 5 psec.
出处
《计算物理》
CSCD
北大核心
1996年第4期454-458,共5页
Chinese Journal of Computational Physics
关键词
隧道电离
复合机制
X射线激光
Tunnel Ionisation
Above Threshold Ionisation
Game and Recombination X ray lasers.
