This paper describes the assembling of a Geiger Muller (GM) detector from a commercial SBM19 tube, with flexibility in the electronics clusters. Many of the references cited are of public domain and available in the Internet, allowing the reader an easier access to the information and other ways to build a GM detector. The proposed detector is a potential tool for the teaching of modern physics at high school and a proposal for a demonstration in science fairs. Measurement results are presented in gas mantle, Am from a smoke detector, and an ashtray with enriched uranium.
Geiger Muller; SBM19; SBM20
