Development of a new type ²¹⁰Po measuring instrument

In order to improve the detection sensitivity, expand the activity detection range and enhance the detection efficiency of the ²¹⁰Po measuring instrument, a new type of instrument is developed. The instrument has five measurement channels, each channel has a unique structure, the detector uses Surface-Type Semiconductor Detector, the shielding box and the sample sending device select the material and the structure with very little radioactive impurity, the main circuit uses ARM micro-processor and ultra-high-speed operational amplifier chip, man-computer interface using touch technology and computer program-controlled combination. The instrument eliminates the lead chamber shielding device, and the anti coincidence detector and its related lines, light weight and small size. The instrument is suitable for the analysis of ²¹⁰Po samples and other very weak alpha samples. (authors)