TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

When an ionizing particle enters the device, it collides with gas atoms and strikes electrons from their orbit around the nucleus of the gas atoms. In addition, an ionizing particle striking the outside of the tube can also knock electrons off the metal casing. In either case, these free electrons then are attracted to the positively charged central wire, gaining energy by the attraction. As they approach the wire they knock electrons off other atoms, creating an avalanche or cascade effect which results in a pulse of current large enough to be detected. A "quenching gas" is usually added to the filler gas so that these avalanches will dissipate over time and not continue indefinitely, which would cause inaccuracy or electronic failure.  1, record 1, English, - quenching%20gas

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Un des constituants du mélange gazeux de remplissage d'un tube compteur de Geiger-Müller dont le rôle est de provoquer l'auto-extinction de la décharge [...]  1, record 1, French, - gaz%20de%20coupage

Record number: 1, Textual support number: 1 OBS

[...] ce sont en général des vapeurs organiques.  1, record 1, French, - gaz%20de%20coupage

Record 1,  Textual support,  Spanish