Carbon fiber electrometer for dosimeter

Details Carbon fiber electrometer for dosimeter Carbon fiber electrometer for dosimeter

1975-06-06

1976-11-23

Rolinec, R. V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Electrostatic attraction or piezoelectric

250378, G01R 532

Patent

active

039939502

ABSTRACT:
An electrometer for conventional pocket radiation dosimeters is disclosed in which the moving element of the electrometer is a carbon fiber. The fiber is spun from polyacrylonitrile homopolymer yarn and has a diameter of approximately 7 microns before carbonization. The polyacrylonitrile homopolymer fiber is conventionally preoxidized at approximately 270.degree. C before conventional carbonization at approximately 1200.degree. C. The resulting working fiber has a round cross sectional diameter of approximately 4 microns and a modulus of elasticity of approximately 15,000,000 psi. The fiber is mounted in a conventionally loop shaped electrometer frame by crimping the ends of the fiber into tabs on the frame.

REFERENCES:
patent: 2793297 (1957-05-01), Siebentritt, Jr. et al.
patent: 3671192 (1972-06-01), Ezekiel

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