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Compton scattering of 1. 12 MeV gamma rays by K-shell electrons

Conference · · Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States)
OSTI ID:7081843
Two sodium iodide counters in coincidence and a twenty channel pulse height analyzer have been used to determine the pulse height distribution of 1.12 MeV gamma rays which are Compton scattered by the K-shell electrons of gold, lead and thorium. The angular variations of the differential cross section ratio, dsigma/sub K//dsigma/sub F/, have already been reported. The present measurements were made at 60 and 100/sup 0/ scattering angles. At 60/sup 0/, lead targets of 30 mg/cm/sup 2/ and 143 mg/cm/sup 2/ were used. At 100/sup 0/, targets of gold (13 mg/cm/sup 2/), lead (143 mg/cm/sup 2/) and thorium (14 mg/cm/sup 2/) were used. In all cases, pulse height distributions of false coincidence events were determined and subtracted from the measured distributions in order to obtain the true distributions. A broadening of the K-shell electron Compton peak has been observed. The results of these measurements are discussed.
Research Organization:
Indian Inst. of Tech., Bombay
OSTI ID:
7081843
Conference Information:
Journal Name: Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States) Journal Volume: 461
Country of Publication:
United States
Language:
English