摘要
在神光装置上进行了爆推型DT气体的玻璃微球内爆实验。产生了5×(?)中子:内爆芯DT密度约一倍液D_2密度:内爆对称性4—8％:内爆速度3.3×10^(?)cm/s:内爆时间约150Ps:能量吸收系数约25％。实验结果与“一次冲击等熵压缩”
Experimental and theoretical studies of the implosion performance of laser-driven exploding pusher targets are presented in this paper.
Typically, exploding pusher targets consist of a glass microballoon with D-T gas. Target dimensions used for the 1TW laser facility are 50μm in radius. 0.5μm in thickness and 10 atm io D-T feul pressure.
The LF-12 laser facility deliver about 2TW in two beams. The la.ser energy was E1 = 50 - 100J. Pulse duration r=80-105ps. The sychronous time of the two beams was ± 10ps with their energy symmetry within ±14%. To characterize implosion processes as completely as possible, a great veriety of plasma diagnostics were employed.
The experimental results of Laser-induced implosion are as follow s : Thermonuclear neutron vields are 5×106 ±20% pulse. The D-T fuel density of compressed core is about 1 ×liquid D2 density. The symmetry of implosion is 4% - 8%. with a implosion velocity of 3.3 × 10- ± 50% cm . s. and a implosion time of 150ps±40ps. The absorption efficiency is 28 % ± 6 % .
出处
《强激光与粒子束》
EI
CAS
CSCD
1989年第2期139-144,共6页
High Power Laser and Particle Beams
关键词
爆推靶
内爆
热核聚变
激光聚变
exploding pusher target, implosion, I hermo-nuclear fusion.
