Abstract
Abstract Several neutron measuring devices were tested experimentally under the neutron fields characterized with two distinct kinds of thermal and fast neutron spectra. These neutron fields were constructed by the mixing of both thermal neutron calibration fields and fast neutron fields of AmBe source. Thermal neutron calibration fields were constructed using a graphite pile with the dimensions of 1.5 × 1.5 × 1.5 m 3 and eight AmBe neutron sources. In order to make the fraction of fast neutron fluence vary in each neutron fields, a 111 GBq of AmBe neutron source was placed additionally in thermal neutron fields from 50 to 200 cm at the reference position. These neutron spectra were measured by using a KAERI Bonner Sphere system and dosimetric quantity delivered to neutron dosemeters such as survey meters and a Thermo Luminescence Dosimeter (TLD) was determined from these measurement results.
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