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Photon yield of 148.9‐keV gamma of 123 Xe
Author(s) -
Johnston A. Sidney
Publication year - 1974
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1637309
Subject(s) - photon , physics , yield (engineering) , nuclear physics , gamma ray , atomic physics , optics , thermodynamics
A direct measurement of the photon yield of the 148.9‐keV gamma of 123 Xe has been made. The value obtained: 48.0±1.0 photons of 148.9‐keV emitted per 100 decays of 123 Xe. The advantage of the present method is that it is a direct measurement and does not rely upon conversion coefficient measurements in 123 Xe and the summing of many gamma intensities. The half life of 123 Xe was measured and found to be 2.23±0.02 h.