Evolution of the temperature field on an absorber irradiated by an intense ion beam

Using the small parameter method, a numerical solution is found for the nonlinear thermal conductivity equation describing evolution of the temperature field in an absorber after completion of a radiation pulse. High speed (10⁶ K/sec) heating of the surface layers over 1·10^–5 sec is observed. Absorber cooling parameters are obtained as a function of time and distance from the irradiated surface.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 89–93, May, 1986.