Numerical analysis of temperature distribution for isochoric heating with intense pulsed power discharge using electron beam diode based impedance controller

Summary form only given. In inertial confinement fusion, understanding implosion dynamics of fuel pellet is a key issue to obtain effective nuclear fusion reactions. A foamed metal is considered as structural materials such as a pusher and a radiator. An energy driver as laser or heavy ion beam irradiates the fuel pellet, and the target material becomes dense plasma through warm dense matter (WDM) regime. Although, the properties in WDM should be clear to design the target pellet. In previous study, isochoric heating with pulsed power discharge was investigated to generate and to measure the WDM state.3,4 We studied the WDM generation with implosion time scale by isochoric heating with pulsed power discharge using intense pulsed power generator ETIGO-II.5 To control the input power into the sample, we proposed an electron beam diode based impedance controller.6 In this setup, the input current was changed to adjust the gap distance between the electrodes of electron beam diode. In this study, we estimate the temperature increase in the apparatus by the experimental data. The temperature distribution is calculated by thermal diffusion equation with the experimental data.