Излучательные характеристики молекул Xe-=SUB=-2-=/SUB=-Cl-=SUP=-*-=/SUP=- при накачке пучком быстрых электронов газовых смесей Xe-CCl-=SUB=-4-=/SUB=- и Ar-Xe-CCl-=SUB=-4-=/SUB=- с низким содержанием CCl-=SUB=-4-=/SUB=-

Abstract

AbstractSpontaneous and stimulated emissions of Xe_2Cl* triplex molecules upon excitation of Xe–CCl_4 gas mixtures with a low CCl_4 content by a pulsed high-energy electron beam have been experimentally studied. The electron energy is 150 keV, and the pump current pulse duration and amplitude are 5 ns and 5 A, respectively. Emission of an Xe_2Cl excimer molecule in the wavelength range of 430–650 nm is shown to consist of 13 narrow vibrational bands with half-widths Δλ ~ 14 nm peaking at 399, 413, 431, 451, 472, 492, 510.3, 534.9, 540.9, 551.7, 564.4, 581.6, and 603 nm. Under the given pumping conditions, a regime of weakly amplified spontaneous emission is implemented at the energy deposition to the gas of ~200 W/cm^3 on the axis of a 50‑mm cell and the electron beam pumping in the wavelength range of 450–550 nm. Spontaneous emission of the 4^2Г–1^2Г band of a Xe_2Cl* excimer molecule at λ_max = 486 nm was amplified by a factor of 60 in a 100‑cm cell under pumping of a dense ^3He–Xe–CCl_4 gas mixture by the ^3He( n , p )^3T nuclear reaction products at the energy deposition to the gas of ~5 mJ/cm^3 in a cavity with the mirror reflections of ~99.4% (totally reflecting mirror) and 98.5% (output mirror).