High-Sensitivity Gamma Spectroscopy for Extended Sources. Application to Activity Measurements on the Human Body, on Glass, and on Soil; SPECTROGRAPHIE GAMMA A GRANDE SENSIBILITE POUR SOURCES ETENDUES. APPLICATION A LA MESURE DE L'ACTIVITE DU CORPS HUMAIN, DU VERRE ET DU SOL
Technical Report
·
OSTI ID:4145890
Thesis submitted to University, Paris. The measurement and location by gamma spectroscopy of human body internal contaminations at maximum permissible levels, and, in certain cases, at lower activities such as that due to Mo was investigated. The characteristics of the high-sensitivity apparatus used are given, and several assemblies using large-volume NaI(Tl) scintillators are described. The relatively light shielding required for natural radioactivity permitted construction of a mobile assembly. Conditions of use are described, and the results are given. All gamma emitting elements were measured in 15 min at levels lower than the tolerance dose. Gamma spectroscopy was also used to determine fission products in the earth and to study radioactive elements in the presence of other emitters. (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Saclay
- NSA Number:
- NSA-18-001942
- OSTI ID:
- 4145890
- Report Number(s):
- CEA-2231
- Country of Publication:
- France
- Language:
- English
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