Double-resonance study of predissociation of the j/sup 3/. delta. /sub g/ state of H/sub 2/

Journal Article · Sat Oct 01 00:00:00 EDT 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.38.3447· OSTI ID:6918688

Lembo, L J; Huestis, D L; Keiding, S R; Bjerre, N; Helm, H

A photoionization-photodissociation double-resonance technique has been employed to excite transitions from selected rovibrational levels of the metastable c /sup 3/Pi/sub u//sup -/ state to the rapidly predissociated j /sup 3/..delta../sub g/ state of H/sub 2/. The photodissociation resonances arise from the configuration interaction between the j /sup 3/..delta../sub g/ and i /sup 3/Pi/sub g/ states, and exhibit the asymmetry of Fano-Beutler profiles. These resonances have widths that decrease with increasing v' from 29 to 10 cm/sup -1/; calculated predissociation widths show the same vibrational trend but are consistently 30% smaller. Results have been obtained for the rovibrational energy spacings of high-v levels within each state, and are in good agreement with theory. Photon energies for the c-to-j state transitions are slightly larger than those predicted theoretically.

• Research Organization: Molecular Physics Department, SRI International, Menlo Park, California 94025
• OSTI ID: 6918688
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 38:7; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
DISSOCIATION
DOUBLE RESONANCE METHODS
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
HYDROGEN
METASTABLE STATES
MOLECULES
MULTIPLETS
NONMETALS
PHOTON COLLISIONS
PREDISSOCIATION
TRIPLETS