A study of the spectra of gamma photons backscattered in the vertical direction by infinite air above ground (skyshine) is presented. The source for these measurements is a 650 Ci cobalt-60 point-source and the skyshine spectra are reported for distances from 150-325 m from the source, measured with a 5 cm x 5 cm NaI(Tl) detector collimated with collimaters of 12 mm and 20 mm diameter and 5 cm length. These continuous spectra are unfolded with Gold's iterative technique. The photon-spectra so obtained have a distinct line at 72 keV due to multiply-scattered photons.
Photon spectra of gamma rays backscattered by infinite air. II. skyshine
Photonenspektren von an unendlichen Luftschichten rueckgestreuten Gammastrahlen. II. Himmel
Nuclear Instruments and Methods ; 172 , 3 ; 559-566
1980
8 Seiten, 6 Bilder, 13 Quellen
Aufsatz (Zeitschrift)
Englisch
PHOTON , SPEKTRUM , GAMMA-STRAHLUNG , RUECKWAERTSSTREUUNG , LUFT , COBALT , ISOTOP , MESSUNG , SZINTILLATIONSZAEHLER
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