We conducted fast heating of a core plasma produced by counter-illumination of two beam bundles of implosion lasers for two incident directions of the heating laser. For the axial heating configuration, wherein the heating laser was incident along the coaxial direction of the implosion lasers, the size and density of the counter-imploded core plasma were estimated. The incident timing of the heating laser was determined. Although the heating laser was incident during the stagnation of the core plasma, there were no considerable increases in the intensity of X-rays with energies beyond 1 keV and the yield of the thermonuclear fusion neutrons. Effective core heating did not occur due to the interaction of the heating laser with the low-density ablated plasma far from the core. On the other hand, for the transverse heating configuration, wherein the heating laser was incident from the transverse direction of the implosion laser axis, optimization of the incident timing of the heating laser was not achieved. However, two-dimensional radiation-hydrodynamic simulation revealed that a heating laser can directly interact with a core plasma and effective heating is expected. In our scheme, transverse heating configuration appears to be significant.

我们对加热激光的两个入射方向的两个内爆激光束进行反向照明，快速加热了核心等离子体。对于轴向加热构造，其中加热激光沿着内爆激光的同轴方向入射，估计了内爆核芯等离子体的尺寸和密度。确定了加热激光器的入射时间。尽管加热激光是在核心等离子体停滞期间入射的，但能量超过1 keV的X射线强度和热核聚变中子的产率没有显着增加。由于加热激光与远离磁芯的低密度烧蚀等离子体的相互作用，未发生有效的磁芯加热。另一方面，对于横向加热配置，其中加热激光是从内爆激光轴的横向入射的，不能实现加热激光的入射定时的优化。然而，二维辐射-流体动力学模拟显示加热激光器可以直接与核等离子体相互作用，并且期望有效加热。在我们的方案中，横向加热配置似乎很重要。