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Further Development Of Microwave Gamma-Ray Ion Chamber

Report Number: ASD TR 61-32
Author(s): Aichroth, J. W.; Sleven, R. L.; Speh, K. C.
Corporate Author: Airborne Instruments Lab Inc Mineola N Y
Laboratory: Directorate of Materials and Processes
Date of Publication: 1961-08
Pages: 44
Contract: AF 33(616)-6971
Project: 7360
Task: 73607
AD Number: AD0268993

A microwave gamma-ray ion chamber has been developed that measures gamma radiation from 10 to the 6th to 10 to the 10th power ergs per gram-hour (carbon) in the presence of a neutron flux of 10 to the 10th power neutrons per square cm per second. This analysis discusses the choice of materials, development of a unique vacuum system, and fabrication of chambers suitable for operation at temperatures to 500 C in a high neutron flux. Data are presented on the response of an ion chamber to various ratios of incident gamma, thermal neutron, and fast neutron fluxes.

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