Ignition condition and gain scaling of low temperature ignition targets

摘要

The ignition and burn dynamics of low temperature ignition(LTI)targets are inves- tigated by means of one dimensional(1-D)coupled transport-hydrodynamics simulations, in which the stagnation dynamics is appropriately taken into account. In this scheme, ignition takes place in the central region of the fuel and then burn wave propagates outward owing to hating of the fusion products, without the production of a strong shock wave. The ignition condition in the LTI scheme is presented in terms of the usualρR-T criterion and of the required implosion velocity. A scaling law for the limiting energy gain is proposed.