Driving high-gain shock-ignited inertial confinement fusion targets by green laser light

作者：Atzeni Stefano^*; Marocchino Alberto; Schiavi Angelo

来源：Physics of Plasmas, 2012, 19(9): 090702.

DOI：10.1063/1.4754307

Standard direct-drive inertial confinement fusion requires UV light irradiation in order to achieve ignition at total laser energy of the order of 1 MJ. The shock-ignition approach opens up the possibility of igniting fusion targets using green light by reducing the implosion velocity and laser-driven ablation pressure. An analytical model is derived, allowing to rescale UV-driven targets to green light. Gain in the range 100-200 is obtained for total laser energy in the range 1.5-3 MJ. With respect to the original UV design, the rescaled targets are less sensitive to irradiation asymmetries and hydrodynamic instabilities, while operating in the same laser-plasma interaction regime.

• 出版日期2012-9