| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for determining the energy spectrum of gamma rays entering from the incident direction of gamma rays along with information on the incident direction, and determining dose rate from each kind of radiation source for each incident direction, or dose rate for each energy band. SOLUTION: A plurality of detection sections, where sensitivity is limited to a specific incident direction, are combined, thus determining the dose rate from each kind of radiation source for each incident direction for gamma rays entering from all directions, or determining the dose rate for each energy band. COPYRIGHT: (C)2004,JPO
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