Studying the proportional discharge dynamics in mixtures of various gases using a chamber with preliminary electron multiplication

By using a chamber with preliminary multiplication of ionization electrons and extraction of the electron component of signals, the proportional disch arge dynamics was studied in various gas mixtures, including mixtures of no ble gases with gases, whose ionization potential is below the excitation en ergy of noble gas atoms (Penning mixtures). It was revealed that the main s ignals with durations of several microseconds, which are determined by the collection of electrons from primary avalanches, have "tails" of secondary avalanches with durations of up to tens of microseconds with a total charge comparable or exceeding the charge in the primary avalanches.