Resonant multiphoton ionization of H₂ via the B ¹Σ_u⁺ , v=7, J=2 and 4 levels with photoelectron energy analysis.

Journal Article · Fri Dec 31 23:00:00 EST 1982 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.445324· OSTI ID:5637007

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

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

We report measurements of photoelectron spectra of an electronically excited state of H₂ (B ¹Σ_u⁺ ) in selected vibrational and rotational levels. The excited state was prepared by resonant three photon excitation of H₂ Χ ¹Σ_g⁺, v=0, J=3 and subsequently was ionized by a single additional photon. Partially resolved rotational structure is observed in the photoelectron spectra and is discussed in terms of the selection rules for direct photoionization and the partial wave composition of the ejected photoelectrons. An additional peak is observed in the spectra, which is tentatively interpreted as arising from photoionization of H*(n=2) formed by photodissociation of H₂ in the B ¹Σ_u⁺ state.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE; Office of Naval Research (ONR)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5637007
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 7 Vol. 78; ISSN JCPSA6; ISSN 0021-9606
• Publisher: American Institute of Physics (AIP)
• 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
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
HYDROGEN
IONIZATION
NONMETALS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
ROTATIONAL STATES
SELECTION RULES
SPECTROSCOPY