Angularly resolved vibrational excitation in Na/sub 2/--He collisions
Journal Article
·
· J. Chem. Phys.; (United States)
OSTI ID:6336866
We report angle-resolved measurements of v/sub i/ = 0 ..-->.. v/sub f/ = 1 vibrational transitions in Na/sub 2/--He collisions at an energy of 90 meV. The agreement with calculated cross sections using an ab initio surface is good, both in the angular variation of the cross section as well as with respect to its magnitude relative to the vibrationally elastic process. The calculated (v/sub i/ = 0, j/sub i/ = 0) ..-->.. (v/sub f/ = 1, j/sub f/ ) differential cross sections are discussed in some more detail. They show structure, in addition to the rainbow oscillations, related to the fact that the vibrational transition probability vanishes for a specific approach angle.
- Research Organization:
- Fachbereich Physik der Universitaet, D 6750 Kaiserslautern, West Germany
- OSTI ID:
- 6336866
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 84:2; ISSN JCPSA
- 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
ALKALI METALS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIMERS
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXCITATION
EXCITED STATES
FLUIDS
GASES
HELIUM
METALS
MILLI EV RANGE
MOLECULE COLLISIONS
NONMETALS
RARE GASES
SODIUM
VIBRATIONAL STATES
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIMERS
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EXCITATION
EXCITED STATES
FLUIDS
GASES
HELIUM
METALS
MILLI EV RANGE
MOLECULE COLLISIONS
NONMETALS
RARE GASES
SODIUM
VIBRATIONAL STATES