| 摘要 |
An automatic radioactivity analyzer of a liquid mixed beta nuclide is provided to reduce noise of the self-detector through the pulse wave height comparative circuit by using the fast coincidence count circuit and minimizing the effect of the outer radiation. An automatic radioactivity analyzer of a liquid mixed beta nuclide is composed of measuring sample preliminary parts(1,2,3,4,5,6,7) automatically manufacturing the sample; a sample injection part installed with a sample transfer plate(9) injecting/measuring a measuring sample bottle into a radiation detecting part; the radiation detecting part having two photo multiplier tubes(11); an outer gamma ray source(12); a pre-amplified circuit; a high voltage circuit; an analogue digital converter; and a digital signal processor(24). A signal detecting and measuring signal processing part(13) operating rapid coincidence count and multi-channel analyzer functions, a main control PC and apparatus operation program and a GUI(Graphic User Interface), and an Ethernet communication part(28) are contained. |
