| 摘要 |
The invention concerns a gamma spectrometer, comprising: means for housing a filter (2); first detecting means (8) for supplying a signal representing at least a radioactive element deposited on a filter (2) installed on, or in, the filter housing means; a reservoir for receiving atmosphere to be controlled; second detecting means (8) for delivering a signal representing radioactivity in an atmosphere to be controlled input in the reservoir (12). |
