A BETA RAY SOURCE BASED ON Au$sup 198$ FOR USE IN STUDIES OF PHYSICAL PROPERTIES OF MATERIALS UNDER IRRADIATION

Journal Article · Wed Feb 01 04:00:00 EST 1961 · Atomnaya Energ.

OSTI ID:4057783

Mokul'skii, M A; Lazurkin, Yu S

A small-dimension (100 mm/sup 3/) beta source with a goldentip bronze- needle source, in a 10 mm long, 0.2 mm thick golden foil tube of 0.85 mm outside diameter is described. The golden tip irradiated at a thermal neutron flux of 1.6 x 10/sup 13/ cm/sup -2//sec acquired 3 x 10/sup 16/ atoms of Au/sup 19/< s8>s decaying as Au/sup 198/ -- beta -- + Hg/sup 198/ with a half life 64.6 hours and maximum beta spectrum energy of 0.97 Mev, followed by 0.411 Mev gamma emission. The resulting amount of Au/sup 198/ is equal to approximately 25 c. The dose distribution along the radius of a teflon specimen irradiated by the gold needle and the electron paramagnetic resonance spectra of irradiated polymethylmethacrylate are plotted. A release of approximately 10% of electron energy was observed outside the source which means that a 1 mm thick layer receives a mean dose of approximately 2OO to 250 r/sec. The contribution of gamma rays in a 1 mm thick teflon specimen is approximately -16%. (R.V.J.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-15-014852
• OSTI ID: 4057783
• Journal Information: Atomnaya Energ., Journal Name: Atomnaya Energ. Vol. Vol: 10
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ATOMS
BETA PARTICLES
BRONZE
COPPER ALLOYS
DECAY
DISTRIBUTION
ELECTRONS
ENERGY
ENERGY LEVELS
FLUORINATED HYDROCARBONS
FOILS
GAMMA RADIATION
GOLD 198
HALF-LIFE
IRRADIATION
LAYERS
MAGNETIC RESONANCE
MAGNETISM
MATERIALS TESTING
METHANE
NEUTRON FLUX
PARAMAGNETISM
PHYSICS
POLYMERS
RADIATION DOSES
RADIATION SOURCES
RADIOACTIVITY
SPECTRA
TABLES
TEFLON
THICKNESS
TIN ALLOYS