Application of Thermoluminescence Dosimeter TLD-100 to Measure Thermal Neutron Fluence by LiF Activation Method نویسندگان
In this study, TL signal induced after activation of 6Li present in TlD-100 was applied in order to measure the thermal neutron fluence in the Tehran Research Reactor Core (TRRC). To obtain the TLD thermal neutron responses, the TRRC neutron fluences were set in the range of 1010 to 1016 n/cm2. With this technique, the self-dose as a consequence of 3H activity, which was raised after a relative short storage time of 1 to 3 days, was used to measure the thermal neutron fluence. After a special thermal treatment, aimed to stabilize the dosimeters and subsequent assessment of sensitivity reduction factors, a linear relationship between the neutron fluence and the induced self-dose was found in the TLD-100. The results showed an extended range for the thermal neutron fluence measurement by the TLD-100, an extended upper limit compared to the TLD-600, as well as, extended lower limit in comparison to the TLD-700.
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