20 June 1989 Recent Advances In Solid Fueled Pulsed Short-Wavelength Chemical Laser Research
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Proceedings Volume 1031, 7th Intl Symp on Gas Flow and Chemical Lasers; (1989) https://doi.org/10.1117/12.950543
Event: 7th International Symposium on Gas Flow and Chemical Lasers, 1988, Vienna, Austria
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.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
I. Bar, I. Bar, D. Heflinger, D. Heflinger, Y. Kaufman, Y. Kaufman, G. Miron, G. Miron, M. Sapir, M. Sapir, Y. Tzuk, Y. Tzuk, S. Rosenwaks, S. Rosenwaks, } "Recent Advances In Solid Fueled Pulsed Short-Wavelength Chemical Laser Research", Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989); doi: 10.1117/12.950543; https://doi.org/10.1117/12.950543
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