Gamma-ray channeling in layered structures

Periodic variations of the refractive index in perfect crystals or similarly layered structures constrain gamma rays with small grazing angles to generally move parallel to the planes. This channeling process is similar to the dynamical diffraction of gamma rays transmitted through crystals (Laue di...

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Bibliographic Details
Published inIEEE Symposium Conference Record Nuclear Science 2004 Vol. 7; pp. 4282 - 4285
Main Authors Tournear, D., Epstein, R., Kippen, R.M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2004
Subjects
Astronomy
Biomedical optical imaging
Crystals
Extraterrestrial measurements
Gamma rays
Optical diffraction
Optical refraction
Optical variables control
Periodic structures
Refractive index
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Summary:Periodic variations of the refractive index in perfect crystals or similarly layered structures constrain gamma rays with small grazing angles to generally move parallel to the planes. This channeling process is similar to the dynamical diffraction of gamma rays transmitted through crystals (Laue diffraction), though it affects a broader range of angles. Gamma-ray channeling in tailor-made layered structures may be a useful mechanism for developing gamma-ray optics for astronomy, medical, and other applications. We constructed an experiment to measure the effect of this gamma-ray channeling method using a tailor-made layered structure of gold-palladium and poly methyl methacrylate (PMMA) plastic. We report progress toward results using 122 keV gamma rays to verify whether this technique is viable and can be used to develop gamma-ray concentrating instruments
ISBN:9780780387003
0780387007
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2004.1466836