Conditions for the simultaneous formation of Ar, Kr, and Xe chlorides in a multiwave radiation source pumped by a transverse discharge

Abstract

Data from a detailed investigation of the variation of longitudinal and transverse noise temperature with changing electric field strength in compensated n-lnSb(Cr) are presented. It is found that longitudinal noise temperature decreases with the diminishing electron concentration, n, and it does not exceed the lattice temperature To, when n < 2 x 10" cm-3 at electric fields EclOOVcm-'. It has been explained that the existing electron-gas cooling effect in electric fields is mainly responsible for this decrease in the noise temperature. Investigation of the noise temperature in the transverse magnetic field and at different lattice temperatures supports the presence of the cooling effect. The influence of the fluctuating potential barriers of the conduction band edge on the noise temperature and electric conductivity are also discussed.

Planar KrCl* excilamp pumped by transverse self-sustained discharge with optical system for radiation concentration

“…In this spectral range, the most intensive are relatively narrow bands of D-X, B-X transitions of KrCl * molecules, a C-A wide band of the KrCl * molecules and the band of Cl * 2 excited molecules at the wavelength 258 nm. Such spectral composition of the discharge radiation is also observed in other methods of exciting excilamps [1][2][3][4][5][6][7], and is attributed to the structure of halide molecules of noble gases and the similarity of kinetic processes in a gas with different methods of discharge formation. The mode of the discharge formation is responsible for the relation of intensities of given bands.…”

“…The volume self-sustained discharge in the mixtures of inert gases and various halogens is usually used as a source of high-power UV radiation; and the discharge is formed by a high-voltage pulsed generator. Excilamps have been developed that are excited by a glow [1,2], barrier [3,4] high-current longitudinal [5], transverse [6,7], radio-frequency [8,9] and capacitive [10] discharges in high-pressure gases. The excilamps showed efficient operation in a wide parameter range of pumping, pressure and composition of gaseous mixture when compared to lasers, and their efficiency could be superior to those of the lasers.…”

Radiant characteristics of high power excilamps with binary exciplexes of XeCl and XeBr

“…As a result, the radiant power of 282 nm plays a more important role at high pressure. In the case of the binary excilamp filled with krypton, bromine and chlorine, Avdeev et al determined the concentration ratio Br 2 /Cl 2 = 2.3 to obtain equal intensity of the KrBr * and KrCl * bands at pressure of about 260 mbar and frequency 30 kHz, due to the rates of harpooning reactions [36]. However, the curve in this paper implies that the gas pressure has more positive effects on bromine reaction, including the harpooning reaction at low pressure and three-body recombination at high pressure.…”

“…Shuaibov et al studied the excilamps with working mixtures such as He/Kr(Xe)/CF 2 Cl 2 [35], Ar/(Kr)/Xe/Cl 2 [36][37][38][39][40][41][42], Kr/Xe/Cl 2 [43,44], Xe/Br 2 /I 2 [45], and Ar/Kr/CCl 4 [46], demonstrating the wide-band radiation under various conditions in glow and transverse discharges. However, the short lifetime and the decreased efficiency impose the restrictions on their application in practice.…”