神光Ⅲ主机双束组激光间接驱动内爆实验研究  

Experimental study on laser indirect-drive implosion with double quads on SGⅢ facility

作　　者：余波[1] 黄天晅[1] 李三伟[1] 陈家斌[1] 蒋炜[1] 陈伯伦[1] 蒲昱东[1] 晏骥[1] 景龙飞[1] 李志超[1] 唐琦[1] 宋仔峰[1] 詹夏雨[1] 江少恩[1] 

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2015年第9期124-129,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(11205142)

摘　　要：在神光Ⅲ主机装置上,利用已经建成的两个激光束组,开展了激光间接驱动内爆物理磨合实验,是神光Ⅲ主机装置首次出中子实验。实验采用1400μm×2100μm黑腔,500μm的塑料靶丸充1 MPa的DD燃料,激光从黑腔两端55°注入。实验获得的最高中子产额为9.7×108。实验结果表明,实验黑腔的耦合效率约为50%;使用的黑腔偏长,靶丸被压缩为"薄饼形";中子产额和激光能量正相关;中子发射峰值时刻主要依赖于烧蚀层厚度。The implosion experiment with double quads on SGⅢfacility was the first time laser indirect-drive implosion experiment,also the first time neutron experiment.The experiments used1400μm×2100μm hohlraum with1000μm LEH and500μm CH target with 1 MPa DD fuel,and the laser was injected the hohlraum by 55°.The highest neutron yield was 9.7×108,up to now,the highest indirect-drive DD neutron yield in domestic experiment.The experimental results show that the coupling efficiency of the hohlraum approximates 50%;the hohlraum is too long,and the pellet is compressed to a'pancake';neutron yield is positively correlated with the laser energy;the Bang Time depends on the thickness of the ablative layer.

关 键 词：神光Ⅲ主机 内爆实验 中子 峰值时刻 

分 类 号：O571.53[理学—粒子物理与原子核物理]