DYS-2型低本底液体闪烁计数器,系科学院生物物理所研制,现已由北京核仪器厂接产,商品型号为FH1916。此计数器具有较低的本底,性能稳定,可长期自动轮测样品,作用方便,是目前国内进行低强度~(14)C和~3H放射性同位素测量的较适用的仪器。 该机采用对两路信号不经相加而分别进行单道脉冲分析后再符合计数的线路逻辑, DYS-2-type low background liquid scintillation counter, developed by Institute of Biophysics, is now produced by Beijing Nuclear Instrument Factory under the product model FH1916. This counter has a lower background, stable performance, long-term automatic rotation of the sample, the role of convenience, is the current domestic low-intensity ~ (14) C and ~ 3H radioisotope measurement of the more applicable instruments. The machine uses two signals without the addition of single-channel pulse analysis, respectively, and then meet the line count logic,