Bromine photodissociation chemical laser

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1985v015n09ABEH007705· OSTI ID:6435749

Gordon, E B; Nadkhin, A I; Sotnichenko, S A

The development of a photodissociation chemical laser utilizing the /sup 2/P/sub 1//sub ///sub 2/--/sup 2/P/sub 3//sub ///sub 2/ transition between components of the fine structure of the bromine atom (lambda = 2.714 ..mu..) is reported. The laser utilizes an i-C/sub 3/F/sub 7/I--IBr mixture. As a result of pulsed photoinitiation of this mixture, both photodissociative pumping IBr+h..nu -->..Br(/sup 2/P/sub 1//sub ///sub 2/)+I, typical of an IBr molecular photodissociation laser, and chemical pumping RI+h..nu -->..R+I(/sup 2/P/sub 1//sub ///sub 2/); I(/sup 2/P/sub 1//sub ///sub 2/)+IBr..-->..I/sub 2/+Br(/sup 2/P/sub 1//sub ///sub 2/), similar to that found in a chemical laser utilizing an RI+Br/sub 2/ mixture, are achieved simultaneously. The maximum output energy of a photodissociation chemical laser is 3.9 and 1.6 times higher than the values for photodissociation and chemical lasers, respectively. The degree of excitation of bromine atoms in the second reaction, determined by laser resonance spectroscopy, is epsilon-c/sub 5/ = (Br(/sup 2/P/sub 1//sub ///sub 2/))/(Br(/sup 2/P/sub 1//sub ///sub 2/))+(Br(/sup 2/P/sub 3/2/)) = 0.5 +- 0.1.

• Research Organization: Institute of Chemical Physics, Academy of Sciences of the USSR, Chernogolovka, Moscow Province
• OSTI ID: 6435749
• Journal Information: Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 15:9; ISSN SJQEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
BROMINE
CHEMICAL LASERS
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION SPECTRA
ENERGY-LEVEL TRANSITIONS
FINE STRUCTURE
HALOGENS
INFRARED RADIATION
LASERS
NONMETALS
RADIATIONS
SPECTRA