A new imaging proportional counter using a Penning gas improves energy resolution

Details A new imaging proportional counter using a Penning gas improves energy resolution A new imaging proportional counter using a Penning gas improves energy resolution

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.309..532s&link_type=abstract

Nature (ISSN 0028-0836), vol. 309, June 7, 1984, p. 532-534. Research supported by the Science and Engineering Research Council.

Physics

12

Penning Effect, Proportional Counters, X Ray Imagery, Gas Mixtures, High Resolution, Spectral Energy Distribution

Scientific paper

Attempts have been made in the past to combine, in a single detector, the position resolution of a multiwire proportional counter or parallel plate imaging proportional counter (PPIC) with the energy resolution of a gas scintillation proportional counter, using light from the avalanches in a PPIC. Attention is presently given to the construction and testing of a detector, designated the Penning Gas Imager (PGI), in which a Penning gas and a two-stage parallel grid avalanche diode are combined with a wedge and strip anode position readout system. The particle background can be reduced by an estimated 99 percent, using an anticoincidence technique.

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