Production of gallium atoms by excimer laser photolysis of trimethyl gallium Page: 3 of 23
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PRODUCTION OF GALLIUM ATOMS BY EXCIMER LASER PHOTOLYSIS
OF TRTMETHYL GALLIUM
by
Steven L. Baughoum, Richard C. Oldenborg, Kenneth R. Winn,
and Douglas E. Hof
Chemistry Division
Los Alamos National Laboratory
Los Alamos, NM 875^5
ABSTRACT
The gas phase kinetics of group 111 elements such as gallium are important
in possible chemically driven energy transfer lasers and in chemical vapor
deposition processes In the electronics Industry. Excimer laser photodissocia-
tion of volatile galilum compounds via multiple photon process provides, in
principle, a convenient room temperature source of gallium atoms for study
using laser photolysis-laser Induced fluorescence techniques. In this paper .
we report preliminary results of the multiple photon dissociation of trimethy,
gallium at '. jj nm. Prompt emission from a number of excited gallium states
(|j ‘■’Gi b *’i>. 6 ‘■P°, \) ^D, and ii ^P) has been observed. The time hlsto-
ri or. oJ1 the gruuriJ state (*1 ‘P®^.,) and the metastatic (4 ‘ have been meas-
ured using laser induced fluorescence. The resulting time profiles are
complicated even In the aiisuiee of a reactant gas by the apparent production of
ground slate gallium at rolsllvtly long time's l 10 us) after the excimer 1 asi''
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Baughcum, Steven L.; Oldenborg, Richard C.; Winn, Kenneth R. & Hof, Douglas E. Production of gallium atoms by excimer laser photolysis of trimethyl gallium, article, March 1, 1985; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1093042/m1/3/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.