Collisional dynamics of the IF B /sup 3/Pi(0/sup +/) state. I. Pulsed excitation studies of v' = 3 and 4 at high pressure

Journal Article · Thu Feb 28 23:00:00 EST 1985 · J. Chem. Phys.; (United States)

OSTI ID:6101798

Wolf, P J; Glover, J H; Hanko, L; Shea, R F; Davis, S J

Collisional processes in the B /sup 3/Pi(0/sup +/) state of IF were studied using temporally and spectrally resolved laser induced fluorescence. Extremely small electronic quenching rate constants (k/sub q/< or =1 x 10/sup -14/ cm/sup 3/ molecule/sup -1/ s/sup -1/) were measured for He, N/sub 2/, and SF/sub 6/. For F/sub 2/, the measured quenching rate constant was (4 +- 1) x 10/sup -12/ cm/sup 3/ molecule/sup -1/ s/sup -1/. Vibrational energy transfer rate coefficients were measured for He and N/sub 2/. The v' = 4 ..-->.. v' = 3 rate constants for He and N/sub 2/ were (6.9 +- 0.7) x 10/sup -12/ and (3.5 +- 0.3) x 10/sup -12/ cm/sup 3/ molecule/sup -1/ s/sup -1/, respectively. For v' = 3 ..-->.. v' = 2, the respective rate constants for He and N/sub 2/ were (5.4 +- 0.5) x 10/sup -12/ and (2.5 +- 0.2) x 10/sup -12/ cm/sup 3/ molecule/sup -1/ s/sup -1/.

• Research Organization: Short Wavelength Laser Branch, Air Force Weapons Laboratory, Kirtland Air Force Base, New Mexico 87117
• OSTI ID: 6101798
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 82:5; ISSN JCPSA
• Country of Publication: United States
• Language: English

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420300* -- Engineering-- Lasers-- (-1989)
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