Geiger–Muller counter tube

https://doi.org/10.1351/goldbook.G02599
A @C01373@ operated under such conditions that the magnitude of each pulse is independent of the amount of energy deposited in it.
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1538 [Terms] [Paper]