| 摘要 |
PURPOSE:To take a fission analysis immediately at a measurement site by one device by providing a radiation detector, an A/D converter, a memory stored with a digital signal, an arithmetic circuit which counts an integration increment at specific intervals of time, and a display device. CONSTITUTION:The radiation detector 10 detects, for example, alpha rays and outputs a detection signal 10a corresponding to the energy of the alpha rays. This signal 10a is amplitude-amplified by a preamplifier 12 and passed through an A/D converter 14 to convert a signal larger than a specific crest value level into a digital signal. Then the digital signal is stored in a memory 16 in real time as a multichannel wave height analyzer (MCA) function. Then the storage contents stored in the arithmetic circuit 18 are integrated for a specific time within the energy range of a specific area. Further, the integral increment of the digital signal integrated by the circuit 18 is counted and the counted value is displayed on a display device 22 through a display controller 20.
|
