K-shell photoabsorption coefficients of O/sub 2/, CO/sub 2/, CO, and N/sub 2/O

Journal Article · Sat Sep 01 04:00:00 EDT 1979 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.20.1045· OSTI ID:5880433

Barrus, D M; Blake, R L; Burek, A J; Chambers, K C; Pregenzer, A L

The total photoabsorption coefficient has been measured from 500 to 600 eV around the K edge of oxygen in gases O/sub 2/, CO/sub 2/, CO, and N/sub 2/O by means of a gold continuum source and crystal spectrometer with better than 1-eV resolution. The cross sections are dominated by discrete molecular-orbital transitions below the K-edge energy. A few Rydberg transitions were barely detectable. Broad shape resonances appear at or above the K edge. Additional broad, weak features above the K edge possibly arise from shake up. The authors give quantitative results that have about 10% accuracy (3sigma), except on the very strong peaks. All the measured features are discussed in relation to other related measurements and theory.

• Research Organization: University of California, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5880433
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 20:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CRYOGENIC FLUIDS
ELECTRONIC STRUCTURE
ELEMENTS
FLUIDS
K SHELL
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
SPECTRA
X-RAY SPECTRA