Photoelectron studies of resonantly enhanced multiphoton ionization of H₂ via the B' ¹Σ⁺_u and D ¹Π_u states

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.452171· OSTI ID:6925626

Pratt, Stephen T. ^[1]; Dehmer, Patricia M. ^[1]; Dehmer, Joseph L. ^[1]

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1. Argonne National Lab., IL (United States)

The photoelectron spectra obtained following three photon resonant, four photon ionization of H₂ via the B' ¹Σ⁺_u, v = 0--2 and via the D ¹Π_u, v = 0, 1 resonant intermediate levels are presented. The intensity ratios of the photoelectron peaks agree qualitatively with the Franck--Condon factors calculated for ionization from the resonant intermediate levels. However, the quantitative agreement is rather poor. Alternative mechanisms for the observed non-Franck--Condon behavior are pointed out, but assessment of their relative importance requires detailed calculations.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6925626
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 4 Vol. 86; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
FRANCK-CONDON PRINCIPLE
HYDROGEN
IONIZATION
MULTI-PHOTON PROCESSES
NONMETALS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
SPECTROSCOPY