| 摘要 |
PROBLEM TO BE SOLVED: To obtain a dosimeter for measuring neutron in which accurate measurement can be ensured with high reproducibility by laying a plastic elastic body, charged particle radiators and a solid for detecting the flight trajectory in layers in a dosimeter case in this order. SOLUTION: The dosimeter comprises a plastic elastic body 4, two charged particle radiators 2, 3, and a solid 1 for detecting the flight trajectory laid in layers in a dosimeter case 5 in this order. When the dosimeter is fixed, bottom face of the dosimeter case 5 serves as the incident plane of neutron and the solid 1 for detecting the flight trajectory is located on the inside. The plastic elastic body 4 preferably uses a plastic form sheet, e.g. a formed natural rubber. The plastic form sheet is preferably thicker than the cavity in the dosimeter case. According to the structure, the plastic form sheet is compressed and the charged particle radiator 2 is pressed against the solid 1 for detecting the flight trajectory and adheres surely thereto.
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