Kinetic studies following state-selective laser excitation

Technical Report · Wed Jan 01 00:00:00 EST 1992

DOI:https://doi.org/10.2172/5747549· OSTI ID:5747549

Keto, J W

We have made measurements of state-to-state deactivation cross sections and radiative lifetimes for Xe*(6p,6p{prime},7p) and Kr*(5p) states in xenon and krypton buffer gases. These results are relevant to kinetic models and both excimer lasers and the infrared xenon laser; and they are a significant improvement in the precision of the known radiative lifetimes. This type of experiment can now be compared with recent calculations of state-to-state collisional relaxation in rare-gases by Hickman, Huestis, and Saxon. We have also made significant progress in the study of the electronic spectra of small molecules of the rare gases. Spectra have been obtained for Xe{sub 2}, Xe{sub 3}, Xe{sub 4}, and larger clusters. As guidance for the larger clusters of the rare gases we have obtained the first multiphoton spectra for excitons in condensed xenon. In collaboration with research on the multiphoton spectra of the rare gases, we have continued experiments using synchrotron radiation in collaboration with the University of Hamburg. In experiments there we have observed excitation and fluorescence spectra for single xenon atoms at the surface, within the second layer, and within the bulk of large argon clusters.

• Research Organization: Texas Univ., Austin, TX (United States). Dept. of Physics
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG05-84ER13191
• OSTI ID: 5747549
• Report Number(s): DOE/ER/13191-12; ON: DE92007705
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
KRYPTON
FLUORESCENCE SPECTROSCOPY
XENON
CHEMICAL REACTION KINETICS
CROSS SECTIONS
EXCITATION
EXCITED STATES
LASER RADIATION
LIFETIME
MULTI-PHOTON PROCESSES
PHOTOIONIZATION
PROGRESS REPORT
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTROSCOPY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
IONIZATION
KINETICS
NONMETALS
RADIATIONS
RARE GASES
REACTION KINETICS
SPECTROSCOPY
664200* - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-)