Inverse Compton Spectrometer

Inverse Compton Spectrometer

Product introduction           

• In the fields of nuclear environment monitoring, radiobiology and nuclear medicine, the specific activity of measured samples in most cases is lower than 40Bq/kg, which is the same order of magnitude as the specific activity of trace natural radionuclides in the surrounding environment soil. In this case, it is necessary to reduce the background of the system, including the environmental background from cosmic rays and the background caused by the Compton effect. The low-background anti-Compton gamma spectrometer is based on solving this problem.

• Low-background high-purity germanium inverse-Compton gamma spectrometer mainly consists of the following parts: HPGe main detector, anti-coincidence shielding detector composed of NaI ring detector and NaI plug detector, lead shielding room, electronics Anti-coincidence circuit, multi-channel analyzer, spectrum analysis software. computers and printers etc.

• When high-energy radiation (such as primary cosmic rays) penetrates the main detector and the anti-coincidence shielding detector, and both detectors have signal output, the anti-coincidence electronics circuit behind will prevent these signals from being recorded by the spectrometer, thereby Play the role of suppressing or shielding the background signal. Similarly, when the gamma rays emitted by the sample to be measured are incident on the main detector, the photons that have the Compton effect will generate a non-all-energy peak signal, and at the same time, they will be scattered at the same time and enter the anti-coincidence shielding detector to generate a signal , the following anti-coincidence electronics circuit will prevent these signals from being recorded by the spectrometer, thereby suppressing the Compton effect and improving the peak-to-compton ratio.

Technical parameters