Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
Phys Rev Lett. 2010 Apr 2;104(13):135002. doi: 10.1103/PhysRevLett.104.135002. Epub 2010 Apr 1.
A multidimensional measurable criterion for central ignition of inertial-confinement-fusion capsules is derived. The criterion accounts for the effects of implosion nonuniformities and depends on three measurable parameters: the neutron-averaged total areal density (rhoR(n)(tot)), the ion temperature (T(n)), and the yield over clean (YOC=ratio of the measured neutron yield to the predicted one-dimensional yield). The YOC measures the implosion uniformity. The criterion can be approximated by chi=(rhoR(n)(tot))(0.8) x (T(n)/4.7)(1.7)YOC(mu)>1 (where rhoR is in g cm(-2), T in keV, and mu approximately 0.4-0.5) and can be used to assess the performance of cryogenic implosions on the NIF and OMEGA. Cryogenic implosions on OMEGA have achieved chi approximately 0.02-0.03.
导出了惯性约束聚变靶丸中心点火的多维可测量判据。该判据考虑了内爆非均匀性的影响，取决于三个可测量的参数：中子平均总面密度（rhoR(n)(tot））、离子温度（T(n））和过干净产额（YOC=实测中子产额与一维产额预测值之比）。YOC 测量内爆的均匀性。该判据可以近似为 chi=(rhoR(n)(tot))(0.8) x (T(n)/4.7)(1.7)YOC(mu)>1（其中 rhoR 为 g/cm(-2)，T 为 keV，mu 约为 0.4-0.5），可用于评估 NIF 和 OMEGA 上的低温内爆性能。OMEGA 上的低温内爆已达到 chi 约为 0.02-0.03。
