MEASURING THE ABSOLUTE NEUTRON SOURCE INTENSITY BY COMPARISON WITH THE T(d,n)He$sup 4$-REACTION

Journal Article · Tue Jan 01 04:00:00 EST 1957 · Atomnaya Energiya

OSTI ID:4346782

Flerov, N N; Talyzin, V M

For determining the absolute intensity of a neutron source the intensity of the neutrons form the T(d n)He/sup 4/ reaction are compared by determination of the absolute number of alpha particles. For the purpose of comparing neutron intensities a graphite square block is used in which a constant neutron sensitivity is proved to prevail which, within a wide domain, is independent of the initial neutron energy. The sensitivity of the graphite detector is reproducible within 1 to 2% for the initial energy range of the neutrons of from 0.1 to 8 Mev. The intensity of the Ra- alpha -Be source H/sup 28/ was determined at (4.78 plus or minus 0.18) x 10/sup 5/ n/sec. The intensity of the Ra-- gamma -Be source H/sup 29/, connected with the intensity measuring of H/sup 28/, results in (3.73 plus or minus 0.14) x 10/sup 5/ n/sec. For the source H/sup 29/ the neutron intensity was determined at (4.86 plus or minus 0.19) x 10/sup 5/ n/sec. The results given agree well with other measurements, especially with the Swedish comparative measurements. (TCO)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-12-009316
• OSTI ID: 4346782
• Journal Information: Atomnaya Energiya, Journal Name: Atomnaya Energiya Vol. Vol: 3, No. 10
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALPHA PARTICLES
BERYLLIUM
DEUTERONS
ENERGY
ENERGY RANGE
ERRORS
FAST NEUTRONS
GAMMA RADIATION
GRAPHITE
HELIUM 4
MEASURED VALUES
NEUTRON FLUX
NEUTRON SOURCES
NUCLEAR REACTIONS
PHYSICS
RADIATION DETECTORS
RADON
SENSITIVITY
TRITIUM