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Enhanced diffraction of MeV ?-rays by mosaic crystals

Enhanced diffraction of MeV ?-rays by mosaic crystals

Authors :
Matsuba, Shunya
Hayakawa, Takehito
Shizuma, Toshiyuki
Nishimori, Nobuyuki
Nagai, Ryoji
Sawamura, Masaru
Angell, Christopher T.
Fujiwara, Mamoru
Hajima, Ryoichi
Source :
Japanese Journal of Applied Physics; November 2016, Vol. 55 Issue: 11 p112402-112402, 1p
Publication Year :
2016

Abstract

The diffraction of g-rays by mosaic Si crystals with thicknesses of 20, 40, and 80 mm and by a 2-mm-thick perfect Si crystal in a transmission Laue geometry was measured using a high-flux 60Co source with an intensity of 2.2 TBq. The measured diffraction intensities at 1.17 and 1.33 MeV using 40- and 80-mm-thick mosaic crystals were enhanced by a factor of approximately 8.6 compared with those of the perfect Si crystal. The integrated reflectivity is well described in statistical dynamical theory by taking into account g-ray absorption inside the crystals.

Details

Language :
English
ISSN :
00214922 and 13474065
Volume :
55
Issue :
11
Database :
Supplemental Index
Journal :
Japanese Journal of Applied Physics
Publication Type :
Periodical
Accession number :
ejs40260046