ANGULAR TIME SYNCHRONIZED DIRECTIONAL RADIATION SENSOR

摘要

An angular time-synchronized directional radiation sensor is provided to indicate the direction, or distribution of directions, of incident gamma radiation, and consequently, to locate sources of radioactivity emitting these photons. The angular time-synchronized directional radiation sensor comprises a rotating radiation sensing means (20), interacting with the incident radiation (60) to produce light flashes, together with a stationary photomultiplier tube (35) that converts the light flashes to electrical pulses that are counted by a data collection means (40). A synchronous motor (14) enables the radiation sensing means (20) to complete a 360 DEG scan within 1 second to reduce the time needed for measuring from hours to only a few minutes. The data collection means calculates an angle of rotation at a corresponding fraction of the 360 DEG scan to rapidly indicate the direction of a radiation source. In one embodiment, the data collection means (40) is a computer. The radiation sensing means (20) can be a scintillator assembly.