SCATTERING OF GAMMA-RAYS. I. SCATTERED GAMMA-RAYS IN THE LABYRINTH OF SHIELDED Co$sup 60$ IRRADIATION FACILITIES. II. RADIOGRAPHY USING THE SCATTERED $gamma$-RAYS

Journal Article · Sun Oct 01 04:00:00 EDT 1961 · Nagoya Kogyo Gijutsu Shikensho Hokoku (Japan)

OSTI ID:4633122

Kaminishi, T

The intensities and energy spectra of scattered gamma rays in the labyrinth of a 3000-C Co/sup 60/ irradiation facilities were measured by means of chamber-type detectors and a scintillation spectrometer. Problems concerning the radiation differences between the 2 labyrinth sections, the contribution of the scattered-rays to the special dosage rate, and the estimation of the dosage rate were studied. The histories of the scattered rays entering the labyrinth are also discussed. It was confirmed that the soft energy components ranging from 100 to 200 kev in the energy spectrum were due to the multi-scattered photons in the shielding wall. The dosage rate in the labyrinth could be expressed approximately as the following factors; quantities of the source, specific gamma -ray emission, 2 geometrical factors determined by the labyrinth shape, and an energy reflecting coefficient. The results agreed with those calculated assuming the geometrical factors were in simple forms. (OID)

• Research Organization: Government Industrial Research Inst., Nagoya, Japan
• NSA Number: NSA-17-036596
• OSTI ID: 4633122
• Journal Information: Nagoya Kogyo Gijutsu Shikensho Hokoku (Japan), Journal Name: Nagoya Kogyo Gijutsu Shikensho Hokoku (Japan) Vol. Vol: 10; ISSN NKGSA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

ENERGY RANGE
PHYSICS