Investigation of the proportional discharge mechanism in nonelectronegative gases

摘要

A shape of the signals in proportional chamber with preamplification gap andelectron component extraction from proportional discharge has beeninvestigated. It was shown for Penning mixtures that in proportional dischargebesides the primary avalanches there is also the tail of secondary avalanchescaused by metastable and nonmetastable Penning effects. For different mixturesof gases the duration of the signals caused by secondary avalanches are equalto ~ n*10 microseconds (n = 1 - 10), the total charge of secondary avalanchesis comparable or larger than in primary avalanches.