STUDIES ON RADIOACTIVATION BY A COBALT-60 $gamma$-RAY SOURCE. IV. STUDIES ON INDIUM DOSIMETRY

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Doitai To Hoshasen (Japan) Discontinuedt) (Romania)

OSTI ID:4776206

Yoshihara, K

Indium dosimetry using the In/sup 155/( gamma , gamma )In/sup 115m/ reaction appeared to be useful for measuring the dosage rate above 10/sup 7/ r/hr and at low temperatures. Using the theories of spherical and nonspherical sources, the dosage rate (D in r/hr) at a given position could be calculated from D = 4.57 x 10/sup -28/ A/sub s/ B/sub sigma /, where A/sub s/ is the saturated radioact ivity produced/g of In, B is the dosage build-up factor, and sigma is the over-all cross section. It is recommended that calculation diagrams for B and sigma be used in order to simplify the calculation. Tabular data from a series of measurements in the vicinity of the 10-kc Co/sup 60/ gamma -source using the In dosimetry method, were in accord with data obtained by means of the Victoreen roentogen meter for Ce dosimetry. The percentage of error exceeded 20%. (OID)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-031991
• OSTI ID: 4776206
• Journal Information: Doitai To Hoshasen (Japan) Discontinuedt) (Romania), Journal Name: Doitai To Hoshasen (Japan) Discontinuedt) (Romania) Vol. Vol: 4; ISSN DOHOA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CERIUM
COBALT 60
CONFIGURATION
CROSS SECTIONS
DECAY
DIAGRAMS
DOSEMETERS
EFFICIENCY
ENVIRONMENT
GAMMA RADIATION
HEALTH AND SAFETY
INDIUM 115
LOW TEMPERATURE
MATHEMATICS
MEASURED VALUES
RADIATION DOSES
RADIATION SOURCES
RADIOACTIVITY
SPHERES
TABLES
USES