Observation of higher order parametric x-ray spectra in mosaic graphite and single silicon crystals

Journal Article · Mon Aug 02 00:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.704· OSTI ID:6023158

Fiorito, R B; Rule, D W; Maruyama, X K; DiNova, K L; Evertson, S J; Osborne, M J; Snyder, D; Rietdyk, H; Piestrup, M A; Ho, A H ^[1]

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1. Research and Technology Department, Naval Surface Warfare Center, Silver Spring, Maryland 20903 (United States) Department of Physics, Naval Postgraduate School, Monterey, California 93943 (United States) Adelphi Technology Inc., Palo Alto, California 94301 (United States)

We have observed up to 8 orders ([ital n]) in the spectra of parametric x-radiation (PXR) in the range 5--40 keV, produced by the interaction of a 90 MeV electron beam with mosaic graphite and single silicon crystals. The measured yields and intensity ratios, [ital I]([ital n][ge]2)/[ital I]([ital n]=1), in graphite are not in agreement with the theory of PXR for mosaic crystals. In comparison, the ratios of intensities in silicon are close to the predictions of PXR theory for perfect crystals. The bandwidths of spectral lines measured in both silicon and graphite are in good agreement with theoretical predictions.

• DOE Contract Number: FG03-91ER81099
• OSTI ID: 6023158
• Journal Information: Physical Review Letters; (United States), Vol. 71:5; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
GRAPHITE
ELECTRON COLLISIONS
X-RAY SPECTRA
SILICON
ELECTRON BEAMS
MEV RANGE 10-100
MONOCRYSTALS
MOSAICISM
YIELDS
BEAMS
CARBON
COLLISIONS
CRYSTALS
ELEMENTAL MINERALS
ELEMENTS
ENERGY RANGE
LEPTON BEAMS
MEV RANGE
MINERALS
NONMETALS
PARTICLE BEAMS
SEMIMETALS
SPECTRA
665300* - Interactions Between Beams & Condensed Matter- (1992-)