Modeling of SQS Propagation Induced by Alpha Ray in Gas Counters

A. Nohtomi, K. Narita, T. Sakae, Y. Uozumi, M. Matoba, N. Koori

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


With reference to optical images of the self-quenching streamer (SQS), we have already proposed a possible mechanism of SQSs induced by α-rays. To check the validity of the mechanism, we have been designing a model for the computer simulation of the SQS propagation based on the newly proposed mechanism. In the present modeling, in order to calculate the growth of the discharge, a set of continuity equations for electrons and ions is numerically solved in a two-dimensional space. An electron supply process from the α-ray ionization track is assumed to be the dominant process for the streamer development instead of the conventional electron-supply process which is based on the photo ionization in the gas media. The streamer propagation is simulated under the concept of “two-region model”. A first comparison between computed and experimental results shows a good agreement.

Original languageEnglish
Pages (from-to)552-557
Number of pages6
JournalIEEE Transactions on Nuclear Science
Issue number4
Publication statusPublished - Aug 1995

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering


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