Wire Counters with a New Gas Mixture
- 1 June 1972
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 19 (3) , 144-147
- https://doi.org/10.1109/tns.1972.4326716
Abstract
A multiwire chamber using a gas mixture of argon, isobutane and ∝-trichlorethane-1, 1, 1 (CH3.CCl3) has been successfully operated. Although this chamber does not operate in the proportional mode (i.e., pulse height is not a linear function of the primary ionization) we feel it has a substantial advantage over conventional proportional chambers especially when it is used to detect high energy particles. We call these detectors wire counters; their unique feature is in the use of a highly electronegative substance, (CH3.CCl3), to limit the electron avalanche. These counters with wire spacing of 1 mm can provide gas multiplication factors between 105 to 107 without going into spark formation or breakdown. Their detection efficiency approaches 100% with large high voltage plateaus. We have obtained a time resolution of ± 6 nsec at FWHM from pulses with rise times between 6-10 nsec.Keywords
This publication has 1 reference indexed in Scilit:
- High spatial resolution proportional chambersNuclear Instruments and Methods, 1970