| 摘要 |
PURPOSE: To undertake the radiation measurement of a liquid radioactive sample, reduce the capacity of a well for housing the sample and make thin a plate to form the well. CONSTITUTION: Suction space 16 for sucking a sample is formed between circular plastic scintillators 12 and 14 in a well 10. Open sections 18 and 20 are formed at both sides of the space 16, so as to be communicated to each other. Furthermore, the sample supplied from one open section 18 is drawn into the space 16 and at the same time, the air is forced out from the other open section 20. A radiant ray emitted from the sample drawn into the space 16 is converted to a photon via the scintillators 12 and 14 for detection with a photomultiplier tube or the like. |
