Splitting of resonant Raman x-ray peaks near the [ital M][sub IV] and [ital M][sub V] edges of uranium

Journal Article · Sun Mar 14 23:00:00 EST 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.47.6241· OSTI ID:6763122

Ice, G E ^[1]; Isaacs, E ^[2]; Zschack, P ^[3]

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1. Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
2. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)
3. Oak Ridge Associated Universities, Oak Ridge, Tennessee 37830 (United States)

Resonant Raman x-ray-scattering spectra have been measured at 1 eV resolution with the incident x-ray energy tuned near the uranium [ital M][sub IV] and [ital M][sub V] absorption edges. Measurements were made on a single crystal of URu[sub 2]Si[sub 2]. Inelastic x-ray spectra were collected within [plus minus]30 eV of the U [ital M][sub IV](3[ital d] 3/2)-[ital N][sub VI](4[ital f] 5/2) and the U [ital M][sub V](3[ital d] 5/2)-[ital N][sub VII](4[ital f] 7/2) x-ray-emission lines. The incident beam was tuned through the [ital M][sub IV] and [ital M][sub V] threshold energies. At both edges the emission spectra are dominated by three lines: a diagram line (corresponding to the promotion of an electron to the continuum), a large spectator line (arising from the promotion of an electron into a pre-edge band), and a smaller companion spectator line. The spectator lines exhibit linear dispersion as a function of the incident x-ray energy and the spectator lines have resonances [similar to]4 eV below the continuum thresholds. At the U [ital M][sub IV] edge, the large spectator line is assigned to the [ital M][sub IV-][ital NVI] transition. The small spectator line has an x-ray energy about 7 eV higher, which is 3 eV below the forbidden [ital M][sub IV-][ital NVII] line. At the U [ital M][sub V] edge the main spectator line is assigned to the [ital M][sub V-][ital NVII] transition with a smaller peak 10 eV lower near the [ital M][sub V-][ital NVI] position.

• DOE Contract Number: AC05-84OR21400; AC02-76CH00016
• OSTI ID: 6763122
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 47:11; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTION
ACTINIDE COMPOUNDS
CRYSTALS
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
EMISSION SPECTRA
INELASTIC SCATTERING
IONIZING RADIATIONS
MONOCRYSTALS
RADIATIONS
RAMAN SPECTRA
REFRACTORY METAL COMPOUNDS
RESONANCE SCATTERING
RUTHENIUM COMPOUNDS
RUTHENIUM SILICIDES
SCATTERING
SILICIDES
SILICON COMPOUNDS
SORPTION
SPECTRA
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
URANIUM SILICIDES
X RADIATION