DTU Nutech GM-25-5A beta Multicounter system
|Within Vocab||SeaVoX Device Catalogue|
|Alternative Labels||DTU Nutech GM-25-5A|
|Definition||A laboratory instrument designed to count beta particles emitted by a sample using the Geiger-Muller principle. A steady gas stream of argon (99%) and isobutene or propane (1%) becomes ionised due to beta particle emission from the sample, and the ionised gas particles are collected within a high voltage field, detected as an electric current pulse and recorded as a counting event. A guard counter allows the removal of the cosmic background radiation signal. The instrument is typically placed inside a lead shielding to reduce the ambient background radiation.|
|Has Current Version||1|
||Geiger counters||Mapping: 471881|
||Technical University of Denmark Centre for Nuclear Technologies||Mapping: 1448479|
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