Simulation of heat transfer and dissipation in targets used in nuclear astrophysics experiments

英文摘要：

This work presents time-dependent numerical calculations of heat generation and dissipation in targets used in high ion-beam current nuclear astrophysics experiments. The simulation is beneficial for choosing the thickness of targets, maximum ion-beam current and design setup for cooling of such targets. It is found that for the very thin target ($^{27}Al(p,p),^{12}C(p,p)$) heat generation inside target is relatively low and a fair amount of high current (few $μ$A)can be used without any melting issue. But in case of thick targets ($^{27}Al(p,γ),^{12}C(p,γ)$) cooling became essential for the survival of reaction target.