| 摘要 |
A radiation detector includes a scintillator crystal (2) in the form of a slab mounted to be rotated by a drive (4) in a housing (8). A photon detector (6) detects photons emitted by the crystal (2). The crystal (2) is rotated to a number of measurement angles and the radiation emitted by a radiation source determined by counting the photons detected by the photon detector. This is used to determine the direction towards the radiation source. |
