RADIOACTIVATION BY THE ($gamma$$,$$gamma$)-REACTION. VII. APPLICATION OF THE ($gamma$$,$$gamma$)-REACTION TO THE $gamma$-RAY DOSIMETRY STUDIES ON THE RELATIVE METHOD BY THE USE OF 10 kc COBALT-60$gamma$-RAY SOURCE

Journal Article · Sun Mar 01 04:00:00 EST 1959 · Radiosotopes (Tokyo)

DOI:https://doi.org/10.3769/radioisotopes.8.17· OSTI ID:4042113

Ikeda, N; Yoshihara, K; Shimada, K

The application of the In/sup 1//sup 1//sup 5/( gamma , gamma )In/sup 1// sup 1//sup 5//sup m/ reacti on to gamma dosimetry is studied by using a 10-kc cobalt-60 source. Indium foils (2 cm x 3 cm) were mounted at definite positions around the source. The dose rate at each position was measured with a Roentgen rate meter and a chemical dosimeter and compared with induced radioactivities. It was found that these values were, in general, proportional. The values obtained by the chemical dosimetric method, however, seem to be affected by the scattering effect at positions near the wall of the cave, and the proportionality is not good in this region. ( gamma , gamma )-dosimetry is convenient for the measurement of high dose rates near large sources and gives good results for gamma rays over 1.04 Mev. (N.W.R.)

• Research Organization: Tokyo Univ. of Education; Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-022586
• OSTI ID: 4042113
• Journal Information: Radiosotopes (Tokyo), Journal Name: Radiosotopes (Tokyo) Vol. Vol: 8
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

ABSORPTION
CHEMICAL RADIATION DETECTORS
COBALT 60
CONFIGURATION
DOSEMETERS
ENERGY LEVELS
EXCITATION
FOILS
GAMMA RADIATION
HEALTH AND SAFETY
INDIUM 115
MEASURED VALUES
NUCLEAR REACTIONS
RADIATION DOSES
RADIATION SOURCES
RADIOACTIVITY
SCATTERING
SURFACES