Patent ID: 7476859

Claim:
A radiation detector with a manipulation grip, comprising: a main body portion including: a radiation detecting portion having a radiation detection probe disposed at a first end of the manipulation grip for detecting a radiation intensity, a radiation detection element being provided in the radiation detection probe and being a semiconductor element for generating a voltage pulse signal having a pulse height value corresponding to the energy of the radiation photon; a liquid crystal display portion being disposed near the first end of the manipulation grip, a control unit provided near the first end of the manipulator grip, for processing the voltage pulse signal from the radiation detection element, and a power supply switch electrically connected to the control unit and provided near the first end of the manipulation grip for switching over power supply to the control; a detachable portion with respect to the main body portion, the detachable portion being disposed at a second end of the manipulation grip and including: a sound output portion having a speaker for outputting a sound according to the radiation intensity detected by the radiation detecting portion, and a power supply portion for supplying power at least to the radiation detecting portion, the sound output portion and the control unit.