Articles you may be interested inInterpretations of XeI and XeBr bound-free emission spectra and reactive quenching of Xe(3 P 2) atoms by bromine and iodine containing molecules Absorption and emission spectra of matrixisolated XeF, KrF, XeCl, and XeBrThe strong ultraviolet emission bands ("Spectrum I") of XeBr, XeI, and KrF have been photographed following electron-beam excitation of appropriate noble gas/halide mixtures at moderate to high pressures. These diffuse spectra are analyzed through trial-and-error theoretical simulations. The upper-state vibrational frequencies are estimated to be 120± 10, 112±8, and 31O±20 cm-I for XeBr, XeI, and KrF, respectively. The analysis also yields approximate shapes for the lower-state potential curves in the Franck-Condon region. Lasing is observed in XeBr (2818 A) and KrF (2484,2491 A) but not in Xel.

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B→X spontaneous and stimulated emission spectra of XeF have been photographed at medium resolution (2.0 Å/mm) and vibrationally analyzed. The assignments are made with the aid of trial-and-error Franck–Condon calculations and band profile simulations, which are described in detail. The strong laser emission near 3511 Å is primarily due to densely overlapped rotational lines in the 1–4 vibronic band, and that near 3532 Å probably includes numerous rotational transitions in the 0–2, 0–3, and 1–6 bands.

Abstmct-A laser cell with 2 1 of excitation volume was used to study the electron-beam pumped KIF laser system at excitation rates of 1.8-7.0 MW/cm3. The system was optimized as an oscillator for various mixtures of Ar, Kr, and F2 at total pressures of 1000 and 2500 torr.The resulting optimum conditions gave an intrinsic efficiency (laser energy out/electron-beam energy deposited) of 12 percent for the 1000 torr total pressure mixture with an output energy of 11 J/1. An efficiency of 10 percent with an output of 40 J/1 was obtained for the 2500 torr mixture. The system was then used as an amplifier to measure the extracted power as a function of input power for the two mixtures. The small-signal gain go, the nonsaturable absorption a, and the saturation intensity I, were determined for the two mixtures.Analysis of the data gave go = 16-18 percent/cm, a! = 0.75-1.25 percent/cm, and Z , = 2 MW/cm2 for the 1000 torr mixture andgo = 17-19 percent/cm, a! = 1.0-1.5 percent/cm, and Z , = 9 MW/cm2 for the 2500 torr mix.