TY - JOUR
T1 - Space charge effect in SQS transition in a gas counter
AU - Ohgaki, Hideaki
AU - Kametani, Hitoshi
AU - Fujita, Yasuyuki
AU - Uozumi, Yuusuke
AU - Ijiri, Hidenobu
AU - Matoba, Masaru
AU - Sakae, Takeji
AU - Koori, Norihiko
PY - 1990/11/1
Y1 - 1990/11/1
N2 - Systematic investigation of the gas multiplication characteristics in the transition region from the proportional to SQS mode in a cylindrical proportional counter has been performed. The property of saturation of the gas multiplication factor can be reproduced using the effective electric field which is corrected for the space charge related to the positive ion density in the avalanche. Photon-mediated gas multiplication can explain the large jump phenomenon of the SQS transition. It is shown that the effective electric field in the avalanche becomes almost zero near the anode surface (Meek's streamer condition) at the 50% transition voltage and the region of its maximum moves slightly away from the anode surface.
AB - Systematic investigation of the gas multiplication characteristics in the transition region from the proportional to SQS mode in a cylindrical proportional counter has been performed. The property of saturation of the gas multiplication factor can be reproduced using the effective electric field which is corrected for the space charge related to the positive ion density in the avalanche. Photon-mediated gas multiplication can explain the large jump phenomenon of the SQS transition. It is shown that the effective electric field in the avalanche becomes almost zero near the anode surface (Meek's streamer condition) at the 50% transition voltage and the region of its maximum moves slightly away from the anode surface.
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U2 - 10.1016/0168-9002(90)90721-H
DO - 10.1016/0168-9002(90)90721-H
M3 - Article
AN - SCOPUS:44949291277
VL - 295
SP - 411
EP - 416
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 3
ER -