Excimer pulse-periodic laser

Abstract

The state-selective dissociation dynamics for anionic and excited neutral fragments of gaseous SiCl 4 following Cl 2p and Si 2p core-level excitations were characterized by combining measurements of the photoninduced anionic dissociation, x-ray absorption and UV/visible dispersed fluorescence. The transitions of core electrons to high Rydberg states/doubly excited states in the vicinity of both Si 2p and Cl 2p ionization thresholds of gaseous SiCl 4 lead to a remarkably enhanced production of anionic, Si − and Cl − , fragments and excited neutral atomic, Si * , fragments. This enhancement via core-level excitation near the ionization threshold of gaseous SiCl 4 is explained in terms of the contributions from the Auger decay of doubly excited states, shake-modified resonant Auger decay, or/and post-collision interaction. These complementary results provide insight into the state-selective anionic and excited neutral fragmentation of gaseous molecules via core-level excitation.

Velocity surveys in a gas-flow spark gap switch

“…2^4), followed by a more complete data set at d = 1.0 cm (Figs. [5][6][7][8][9][10][11][12][13][14].…”

High repetition rate effects in XeCl tea lasers

“…At present, average output powers from 10 W to 200 W have been obtained by several researchers from transverse flow RGH lasers, with closed cycle or blowdown configurations [1][2][3][4][5][6][7]. The operating characteristics of these systems have shown that more than 5 gas replacements in the discharge volume between pulses are required to maintain the máximum energy per pulse.…”