THE ABSOLUTE $gamma$-RAY EFFICIENCIES OF IONIZATION CHAMBERS

Journal Article · Wed Jan 01 04:00:00 EST 1958 · Atomnaya Energ.

OSTI ID:4301056

Smirnov, V V

The absolute number of electrons was found by determining the total spectrum of all secondary electrons knocked from a 1.5 mm thick aluminum plate by Co/sup 60/ gamma rays (h nu = 1.17 and 1.33 Mev) and comparing it to the measured beta spectra of sources of known activity under the same conditions. The angular distributron of electrons in the range 0 to 180 deg was determined for each 100-kev energy interval. Thc graphic presentation of electron angular distributrons at 300 to 400 and 900 to 1000 kev is shown. Calculations showed that for the chamber investigated, the number of ion pairs formed in 1 sec in 1 cm/sup 3/is (4.8 L plus or minus 0.5) x 10/sup 6/. (R.V.J.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-004646
• OSTI ID: 4301056
• Journal Information: Atomnaya Energ., Journal Name: Atomnaya Energ. Vol. Vol: 5
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ALUMINUM
ANGULAR DISTRIBUTION
BETA PARTICLES
COBALT 60
COMPTON EFFECT
DIAGRAMS
EFFICIENCY
ELECTRONS
ENERGY RANGE
EQUATIONS
GAMMA DETECTION
GAMMA RADIATION
GAMMA SOURCES
INSTRUMENTS
IONIZATION CHAMBERS
IONS
KEV RANGE
MEASURED VALUES
MEV RANGE
NUMERICALS
OPERATION
PARTICLE SOURCES
PHOTOELECTRIC EFFECT
PLATES
QUANTITATIVE ANALYSIS
RADIOACTIVITY
SPECTRA
STANDARDS
THICKNESS