Comparison between large discharges of a gas counter in pure CH4 and in a CH4Ar mixture

Akihiro Nohtomi, Tatsuya Matsumoto, K. Narita, Yusuke Uozumi, T. Sakae, M. Matoba, N. Koori, H. Ijiri

Research output: Contribution to journalLetter

Abstract

Gas discharge characteristics in pure CH4 have been studied in the high gas-multiplication region by using a gas counter with a thick anode wire (50 μm in diameter) and compared with those of the self-quenching streamer (SQS) mode in a CH4Ar mixture. The results of the first optical observation indicate that the large pulses observed in CH4, whose pulse amplitudes are comparable to those of the SQS mode, are not due to streamer discharges. Instead, a luminous region is observed near the anode wire (r ≤ 0.7 mm) where the electric field is higher than the threshold value for gas multiplication, 104 V/cm.

Original languageEnglish
Pages (from-to)582-584
Number of pages3
JournalNuclear Inst. and Methods in Physics Research, A
Volume365
Issue number2-3
DOIs
Publication statusPublished - Nov 11 1995

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Discharge (fluid mechanics)
counters
multiplication
anodes
quenching
Gases
gases
wire
Quenching
Anodes
gas discharges
Wire
pulse amplitude
thresholds
electric fields
Electric fields
pulses

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Comparison between large discharges of a gas counter in pure CH4 and in a CH4Ar mixture. / Nohtomi, Akihiro; Matsumoto, Tatsuya; Narita, K.; Uozumi, Yusuke; Sakae, T.; Matoba, M.; Koori, N.; Ijiri, H.

In: Nuclear Inst. and Methods in Physics Research, A, Vol. 365, No. 2-3, 11.11.1995, p. 582-584.

Research output: Contribution to journalLetter

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AU - Nohtomi, Akihiro

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AU - Narita, K.

AU - Uozumi, Yusuke

AU - Sakae, T.

AU - Matoba, M.

AU - Koori, N.

AU - Ijiri, H.

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