Kinetic study of energy transfer from He(n = 2, 3) to Ne, Ar, Kr, and Xe
Journal Article
·
· Phys. Rev., A; (United States)
Time-resolved spectroscopic studies have been carried out on various emissions from He-Ar, He-Kr, He-Xe, and He-Ne mixtures to obtain kinetic information and quenching cross sections following charged-particle excitation. Our results are consistent with the pathways model of Payne, Klots, and Hurst in which Jesse effects are due primarily to energy transfer from He(2 /sup 1/S) to an atom or molecule which is consequentially ionized. Quenching cross sections for He(2 /sup 1/S) -Ar, -Kr, and -Xe at thermal (300 degreeK) collision energy were obtained as 22.5, 42, and 70 A/sup 2/, respectively, with an accuracy of 10%. These results are smaller than theoretical calculations which make use of the orbiting approximation, but agree well with experimental data obtained by crossed-molecular-beam methods. Using the same method, we obtained for the first time room-temperature quenching cross sections for He(2 /sup 1/P) -Ar and He(3 /sup 1/P) -Ne, -Ar, -Kr, -Xe (142 +- 42, 42 +- 4, 53 +- 5, 39 +- 4, and 73 +- 7 A/sup 2/, respectively). These results are larger than theoretical calculations based on the dipole-dipole mechanism by Katsuura and Watanabe. Quenching cross sections for He(3 /sup 3/P) -Ne, -Ar, -Kr, -Xe, and He(3 /sup 1/D) -Ne were obtained as 32 +- 5, 22 +- 3, 17 +- 3, 67 +- 10, and 30 +- 5 A/sup 2/, respectively. (AIP)
- Research Organization:
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
- OSTI ID:
- 7258921
- Journal Information:
- Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 14:5; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
DE-EXCITATION
ELEMENTS
EMISSION SPECTRA
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
FLUIDS
FLUORESCENCE
HELIUM
KRYPTON
LUMINESCENCE
NEON
NONMETALS
RADIATIONLESS DECAY
RARE GASES
SPECTRA
XENON
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
DE-EXCITATION
ELEMENTS
EMISSION SPECTRA
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
FLUIDS
FLUORESCENCE
HELIUM
KRYPTON
LUMINESCENCE
NEON
NONMETALS
RADIATIONLESS DECAY
RARE GASES
SPECTRA
XENON