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Proceedings Paper

Recent Advances In Solid Fueled Pulsed Short-Wavelength Chemical Laser Research
Author(s): I. Bar; D. Heflinger; Y. Kaufman; G. Miron; M. Sapir; Y. Tzuk; S. Rosenwaks
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Paper Abstract

Recent advances in the research aimed at achieving short-wavelength chemical laser via detonation of primary explosives are presented. Lead azide, Pb(N3)2, is initiated by a laser pulse and the ensuing chemiluminescence and laser induced fluorescence are monitored. As a result of the detonation, electronically excited N2 is formed and a number of Pb states are preferentially populated by energy transfer from the N2. Most of the chemiluminescence originates in Pb and appears in the time interval 5 - 50 μs following the initiation, depending on the geometry of the detonation vessel. The temporal behavior is explained by a "moving cloud" hydrodynamic model and by a coupled hydrodynamic-kinetic model. Calculations based on the coupled model point out that population inversion between potential laser levels of Pb is feasible. Both experiments and calculations indicate that high concentrations of excited, effectively long-lived Pb states are maintained as a result of radiation-trapping and that these states can be exploited to obtain laser transitions.

Paper Details

Date Published: 20 June 1989
PDF: 13 pages
Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); doi: 10.1117/12.950543
Show Author Affiliations
I. Bar, Ben-Gurion University of the Negev (Israel)
D. Heflinger, Ben-Gurion University of the Negev (Israel)
Y. Kaufman, Nuclear Research Center-Negev (Israel)
G. Miron, Nuclear Research Center-Negev (Israel)
M. Sapir, Nuclear Research Center-Negev (Israel)
Y. Tzuk, Ben-Gurion University of the Negev (Israel)
S. Rosenwaks, Ben-Gurion University of the Negev (Israel)

Published in SPIE Proceedings Vol. 1031:
7th Intl Symp on Gas Flow and Chemical Lasers
Dieter Schuoecker, Editor(s)

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