Resonances of the j sup 3. Delta. sub g state in the differential photodissociation cross section of H sub 2

Journal Article · Thu Aug 01 00:00:00 EDT 1991 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.44.1584· OSTI ID:5267938

Siebbeles, L D.A.; Schins, J M; Los, J ^[1]; Glass-Maujean, M ^[2]

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1. FOM-Institute for Atomic and Molecular Physics, Kruislaan 407, 1098SJ Amsterdam, The Netherlands (NL)
2. Laboratoire de Spectroscopie Hertzienne de l'Ecole Normale Superieure, Universite Pierre et Marie Curie, 4 place Jussieu, 75252 Paris CEDEX 05, France (FR)

Resonances in the differential photodissociation cross section of H{sub 2} are studied. Photon excitation from the metastable {sup 3}{Pi}{sub u}{sup {minus}} state occurs around resonances in the {sup 3}{Delta}{sub g} state lying in the continuum of the {sup 3}{Pi}{sub {ital g}} state. The {ital j} {sup 3}{Delta}{sub {ital g}} state is coupled to the continuum by the nuclear rotation. Since direct excitation to the continuum can also occur, interference is present, which expresses itself as a change in anisotropy of the photofragments as the photon energy is scanned over a resonance. Fano parameters, linewidths, and anisotropy parameters are obtained from the measured differential cross sections and are treated theoretically as outlined in the preceding paper (Glass-Maujean and Siebbeles, Phys. Rev. A 44, 1577 (1991)). The experimental and calculated results are in good agreement.

• OSTI ID: 5267938
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 44:3; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISSOCIATION
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FANO FACTOR
GROUND STATES
HYDROGEN
INELASTIC SCATTERING
METASTABLE STATES
MOLECULE COLLISIONS
NONMETALS
PHOTON COLLISIONS
PHOTON-MOLECULE COLLISIONS
RESONANCE SCATTERING
SCATTERING