NEUTRON MEASURING METHOD AND APPARATUS

Patent · 29 July 1958

OSTI ID:4304387

Seaborg, G T; Friedlander, G; Gofman, J W

A fast neutron fission detecting apparatus is described consisting of a source of fast neutrons, an ion chamber containing air, two electrodes within the ion chamber in confronting spaced relationship, a high voltage potential placed across the electrodes, a shield placed about the source, and a suitable pulse annplifier and recording system in the electrode circuit to record the impulse due to fissions in a sannple material. The sample material is coated onto the active surface of the disc electrode and shielding means of a material having high neutron capture capabilities for thermal neutrons are provided in the vicinity of the electrodes and about the ion chamber so as to absorb slow neutrons of thermal energy to effectively prevent their diffusing back to the sample and causing an error in the measurement of fast neutron fissions.

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-000998
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 2845544
• OSTI ID: 4304387
• Country of Publication: United States
• Language: English

Related Subjects

AIR
AMPLIFIERS
CAPTURE
CIRCUITS
COATING
ELECTRIC POTENTIAL
ELECTRODES
FAST NEUTRONS
FISSION
IONIZATION CHAMBERS
MEASURED VALUES
NEUTRON SOURCES
NEUTRONS
PATENTS
PLATES
RADIATION DETECTORS
RECORDING SYSTEMS
SHIELDING