摘要
Based on our previous work(Phys.Plasmas 25 012704(2018)),a fitting formula is given for electron-ion energy partition fraction of 3.54-MeV fusion alpha particles in deuterium-tritium(DT) plasmas as a function of plasma mass density ρ,electron temperature T_(e),and ion temperature T_(i).The formula can be used in a huge range of the plasma state,where ρ varies between 1.0 g/cc~10.0^(3) g/cc and both T_(e) and T_(i) change from 0.1 keV to 100.0 keV.Relativistic effect for electrons is investigated including the effect of the projectile recoil in the plasmas at T_(e)≥ 50.0 keV.The partition fraction for T_(e)>T_(i) is found to be close to that for T_(e)=T_(i). The comparisons with other fitting results are made at some plasma densities when T_(e)=T_(i),and the difference is explained.The fitting result is very close to the calculated one in most cases,which is convenient for the simulation of alpha heating in hot dense DT plasmas for inertial confined fusion.
作者
张艳宁
王志刚
赵永涛
何斌
Yan-Ning Zhang;Zhi-Gang Wang;Yong-Tao Zhao;Bin He(School of Science,Xi’an Jiaotong University,Xi’an 710049,China;Institute of Applied Physics and Computational Mathematics,Beijing 100088,China)
基金
Project supported by the National Key Research and Development Program of China(Grant Nos.2017YFA0402300 and 2017YFA0403200)
the National Natural Science Foundation of China(Grant No.11574034)
the Innovation Development Foundation of China Academy of Engineering Physics(CAEP)(Grant No.CX20200029)
the Science Challenge Project(Grant Nos.JCKY201612A501)。
