| 摘要 |
PROBLEM TO BE SOLVED: To provide a radiation measuring instrument having a super-conducting radiation detection element and capable of measuring the energy and the intensity of radiation by a high energy resolution in which characteristic degradation by external magnetic field is prevented, and the measurement with high energy resolution is consistently realized. SOLUTION: In a super-conducting radiation detection element installed on a low-temperature stage of a cooling device, a means to shield external magnetic field is provided on the low-temperature stage together with the super-conducting radiation detection element. COPYRIGHT: (C)2004,JPO&NCIPI
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