高增益靶体点火的动力学过程分析

THEKINETICPROCESS ANALYSIS OF VOLUME THERMONUCLEAR IGNITION IN HIGH GAIN INERTIAL CONFINEMENT FUSON

针对中心热斑点火和热核传播燃烧（简称中心点火）的高增益靶设计理论要求很高和技术上的难度很大，我们通过阻热层的设计，在高增益靶的整体点火和燃烧（简称体点火）设计上首先实现挡光系统的非稳定温度脱离，由平衡点火和燃烧逐步过渡到非平衡点火和燃烧，从而将驱动能量降到１５ＭＪ左右，实现了体点火和体燃烧。

AbstractThe central ignition and propagation burn(CIPB)is a great achievement for many year’sre-search in LLNL,it is also the best theory of target design until now. Recent years the volumeignition and volume burn(VIVB)has begun to receive a lot attention and investigation becauseof the great difficulties in CIPB.The direct non local thermodynamic equilibrium (non LTE)ignition(the threshold temper-ature is about 5keV)in VIVB demands too much ignition energy to practise it.In this paper agood heat resistance layer and a good inert layer as the shell of DT are used to make VIVBrealistic. An unstable non LTE state and the transition from LTE ignition and burn tonon LTE ignition and burn is discussed,and in this way the driving energy can be lowered to15MJ or so. The VIVB design is achieved and high gain fusion is obtained.In this paper, thethreshold conditions for temperature increading by compression,and for ignition and burn aregiven,Finally,a high gain and a low gain models for VIVB by computational simulation aregiven in this paper.