A SULFUR-PHOSPHORUS ABSOLUTE FAST NEUTRON FLUX DETECTOR

Journal Article · Mon Jul 01 04:00:00 EDT 1963 · Nuclear Science and Engineering (U.S.)

OSTI ID:4682856

Gilmour, G A

Threshold detectors composed of S-P mixtures are used for flux measurements on fast neutrons. P is incorporated into the detector in order to furnish a method for determining the counting efficiency of the counter. The counter is exposed to thermal neutrons with a known flux, and the P/sup 32/ produced by the P/sup 31/(n, gamma )P/sup 32/ is determined. The detector is then covered with Cd in order to prevent further P/sup 32/ production by this mechanism, and is exposed to the unknown fast-neutron flux. The P/sup 32/ produced by the fast-neutron reaction S/sup 32/(n,p)P/sup 32/ is then determined, and since the counting efficiency of the counter is known from the thermal- neutron measurement, the absolute fast-neutron flux can be calculated. (T.F.H.)

• Research Organization: Cornell Univ., Ithaca, N.Y.
• NSA Number: NSA-17-030872
• OSTI ID: 4682856
• Journal Information: Nuclear Science and Engineering (U.S.), Journal Name: Nuclear Science and Engineering (U.S.) Vol. Vol: 16; ISSN NSENA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

EFFICIENCY
FAST NEUTRONS
GAMMA RADIATION
INSTRUMENTS AND INSTRUMENTATION
MEASURED VALUES
NEUTRON DETECTION
NEUTRON FLUX
NUCLEAR REACTIONS
PHOSPHORUS
PHOSPHORUS 31
PHOSPHORUS 32
PROTONS
SULFUR
SULFUR 32
THERMAL NEUTRONS