Heating of Materials with a Wide Class of Pulsed Electron Beams

Abstract

In this work, based on the introduced heating type criterion, we analyze the temperature modes induced by pulsed electron beams (PEBs) in a wide range of their parameters. Mainly, we have focused on the investigation of material melting threshold representing both power or/and energy density of PEBs. Computer simulation of the dynamics of temperature fields under irradiation with PEBs has been carried out using the ‘HEATPACK-1.0’ software package. The U accelerating voltages have been varied in a wide range from 10 3 up to 10 6 V when studying the MMT. It has been established that at low U levels (heating type criterion γ≪1), EMMT increases with rising the τ pulse duration but at high U levels (γ≫1), EMMT decreases with rising the τ pulse duration. Moreover, based on the heating type criterion approach a simple classification of the sources of PEBs can be proposed