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Proceedings Paper

Studies of short-wavelength chemical lasers: enhanced emission of Pb atoms following detonation of lead azide via a supersonic nozzle
Author(s): Illana Bar; T. Ben-Porat; Ari Cohen-Nov; Dov Heflinger; G. Miron; Yitshak Tzuk; Salman Rosenwaks
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Paper Abstract

Previous studies in our laboratory have shown that preferential excitation of high lying electronic states of the lead atom is obtained following the detonation of lead azide. However, measurements have shown that the detonation products form an optically opaque medium. In order to overcome this problem, the detonation was conducted via a supersonic nozzle. As a result a transparent medium was formed near the nozzle exit plane. Strong emission from lead atoms was achieved in this medium. Time- and wavelength resolved measurements have shown that the emission intensity of the 3P1° ? 1 D2 transition of the lead atom is significantly enhanced as compared to that from 3P1° to lower lying states. The behavior of the emission is explained in terms of kinetic and spectroscopic (self-trapping) mechanisms. The implication of our results to obtaining laser oscillation following detonation via supersonic nozzles is discussed.

Paper Details

Date Published: 1 February 1991
PDF: 4 pages
Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); doi: 10.1117/12.25899
Show Author Affiliations
Illana Bar, Ben-Gurion Univ. of the Negev (Israel)
T. Ben-Porat, Ben-Gurion Univ. of the Negev (Israel)
Ari Cohen-Nov, Ben-Gurion Univ. of the Negev (Israel)
Dov Heflinger, Ben-Gurion Univ. of the Negev (Israel)
G. Miron, Ben-Gurion Univ. of the Negev (Israel)
Yitshak Tzuk, Ben-Gurion Univ. of the Negev (Israel)
Salman Rosenwaks, Ben-Gurion Univ. of the Negev (Israel)


Published in SPIE Proceedings Vol. 1397:
8th Intl Symp on Gas Flow and Chemical Lasers
Concepcion Maroto Domingo; Jose M. Orza, Editor(s)

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