Geiger region

Geiger region

[′gī·gər ‚rē·jən]
(nucleonics)
The range of operating voltages of a radiation counter tube within which the output charge per count does not depend on the nature of the initial ionizing event. Also known as Geiger-Müller region.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.