Title :
An interpretation of the mechanism of the self quenching streamer
Author_Institution :
Inst. of High Energy Phys., Acad. Sinica, Beijing, China
fDate :
10/1/1995 12:00:00 AM
Abstract :
In this paper, the experiments on self quenching streamer (SQS) discharge in single wire and multi-wire chambers are performed, and a possible Interpretation of the SQS mechanism is proposed on the basis of analyzing the previous experimental results. According to this model, the excited atoms or molecules created in the latent track and subsequent avalanches play an important role. They form the main photo electron source. The interaction between them is also possibly a source of ionizing photons. Thus, a formula that describes the streamer transition and streamer charge is deduced. A comparison between theory and experiments is made. It is indicated that whether the streamer transition occurs or not, the absorption and radiation characteristics of the atoms or molecules of gases in the mixture is the decisive factor, and as a result of the difference in those characteristics, the different operating modes appear
Keywords :
particle detectors; streamer chambers; SQS discharge; SQS mechanism; absorption characteristics; avalanches; excited atoms; excited molecules; ionizing photon source; latent track; multi-wire chambers; photo electron source; radiation characteristics; self quenching streamer; single wire chambers; streamer charge; streamer transition; Anodes; Argon; Cathodes; Charge measurement; Current measurement; Electrical resistance measurement; Pulse amplifiers; Pulse measurements; Shape measurement; Wire;
Journal_Title :
Nuclear Science, IEEE Transactions on