Absolute Measurement of $beta$ Emitters with a 4 $pi$ Counter; MESURE ABSOLUE DE L'ACTIVITE DES EMETTEURS $beta$ AU COMPTEUR 4 $pi$
Thesis/Dissertation
·
OSTI ID:4112918
An investigation was made of the conditions under which the activity of beta -emitting radionuclides may be measured with a maximum of precision, and as a result to study the relevant corrections. The various problems relating to activity measurements with a 4 pi counter were examined successively: comparison of 4 pi , G-M and proportional counters; study of the preparation of sources; corrections on the counting of sources; self-absorption; and correction for absorption. The precision obtained on these measurements varies from 1.2 to 3%, with the result that the 4 pi counter can be considered a very satisfactory calibration instrument. (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Saclay
- NSA Number:
- NSA-15-007505
- OSTI ID:
- 4112918
- Report Number(s):
- CEA-1229
- Country of Publication:
- France
- Language:
- English
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OSTI ID:4699791