共振线俘获对碰撞激发X光激光增益特性的影响

 以类氖-锗离子为例,用逃逸概率方法研究了共振线俘获效应对电子碰撞激发X光激光增益特性的影响。对波长为19.6nm,23.2nm和23.6nm等三条激光线,讨论了增益特性对增益区宽度ΔR和介质速度梯度dV/dZ的依赖关系.     

D. CCD视频技术、等离子体诊断和脉冲辐射摄影

本文对CCD摄象技术、等离子体诊断和脉冲辐射摄影的国内外最新发展作了评述,并涉及到在高技术领域的应用。     

Corkscrew振荡引起的发射度增长

 用解析方法来确定由二种因素引起的Corkscrew振荡所造成的归一发射度增长的表达式。这二种因素是电子束的非理想注入以及聚焦磁场相对于系统轴的随机偏斜。     

Effecfs of Cross-Correlation Between Real Noise in Transient Process of Single-Mode and Imaginary Parts of Colored Pump Laser

A two-dimensional single-mode laser model with cross-correlation between the real and imaginary parts of the colored quadric pump noise is investigated. A novel laser amplitude Langevin equation is obtained, in which the cross-correlation λp between the real and imaginary parts of the pump noise appears. The mean, variance, and skewness of first-passage-time are calculated. It is shown that the mean, variance, and skewness of first-passage-time are strongly affected by λp.     

主—被动对撞脉冲锁模钕玻璃振荡器研究

研制成功了一台主-被动对撞锁模的钕玻璃振荡器,激光脉冲宽度达到3ps强度起伏小于±6％,实验分析了影响振荡器稳定输出的几个原因。     

放大器型自由电子激光饱和功率的定标定律

用量纲分析和数值计算相结合的方法,给出常参数放大器型毫米波自由电子激光基模辐射的饱和功率和饱和长度的一套定标定律。     

Parity mixing in 19F and the weak parity non-conserving nucleon-nucleon interaction

We report calculations of the asymmetry of the 110 keV photon emitted in the decay of the polarized $\text{1}\text{2}$^? first excited state of ¹⁹F. The calculations employ short range correlations obtained by solving the Bethe-Goldstone equation in the A = 20 system, and are carried out for a wide range of weak parity non-conserving potentials suggested in the literature. Because of the large experimental error of the observed asymmetry, many of these potentials give results compatible with the experimental value. A calculation of the parity allowed E1 matrix element suggests that the standard Cabibbo potential gives results which disagree in sign with the observed asymmetry, which has also been the case in other parity non-conserving transitions.     

GaAs探测器实验标定

叙述了在闪光Ⅰ上用6MV轫致辐射实验标定快响应GaAs光电探测器的原理实验结果以及分析讨论。     

爆炸磁压缩发生器爆炸管运动研究

 报导了对爆炸磁压缩发生器(MFCG)的爆炸管进行的爆轰试验结果。用电子学方法测试了爆炸管采用的粉状RDX炸药的爆轰速度;采用高速分幅摄影方法,观测了爆炸管在管内RDX炸药爆轰产物驱动下的膨胀运动过程,测试了膨胀角、对称性和膨胀速度。试验表明,爆炸管在膨胀至 3倍初始半径内未发现破裂现象,其性能满足MFCG的设计要求。     

XGS—12型高速电影摄影机

XGS-12型摄影机是西安光机所新近推出的又一种16mm棱镜补偿式高速电影摄影机,其画幅尺寸为7.5×10.4mm~2时的最高拍摄频率为11000fps。该机性能优异,附件齐全,本文对该机将从光学系统摄影机和电控制系统三个部分加以介绍。