Relaxation of zone charge carriers and luminescence in crystals excited by powerful electron-beam and femtosecond laser radiation

Abstract

Heating of relaxed band charge carriers occurs in ionic crystals under nanosecond irradiation by dense electron beam as a result of collisions of carriers with high-energy electrons during the action of excitation pulse. Heating of relaxed low-energy electrons in the conduction band (CB) in the process of multiphoton ionization of crystals is unlikely if the duration of excitation femtosecond laser pulses does not exceed the relaxation time of the induced high-energy electrons in CB.