Shape Resonances in K-Shell Photoionization of Diatomic Molecules

Journal Article · Tue Jul 01 04:00:00 EDT 1975 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.35.213· OSTI ID:5036173

Dehmer, Joseph L. ^[1]; Dill, Dan ^[2]

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1. Argonne National Lab., IL (United States)
2. Boston Univ., MA (United States). Dept. of Chemistry

We show that K-shell photoionization spectra of diatomic molecules can exhibit strong shape resonances near threshold. The molecular field is decisive in this phenomenon. It induces the resonant contraction of high-l components of the ionization channels, and it couples these components with low-l components produced in the atomic cores by K-shell photoionization. We demonstrate the effect for N₂ by using the multiple-scattering model. Clear evidence for this phenomenon exists for N₂, CO, and NO.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: US Energy Research and Development Administration (ERDA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5036173
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 35; ISSN 0031-9007; ISSN PRLTAO
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

640305* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Theory-- (-1987)
74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
IONIZATION
MULTIPLE SCATTERING
NITROGEN
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOTOIONIZATION
SCATTERING
SPECTRA
X-RAY SPECTRA