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Report No.

Study on the burn-up characteristics of a thermal neutron filter containing B$$_{4}$$C particles for NTD-Si irradiation

Komeda, Masao   ; Obara, Toru*

We have investigated an alternative irradiation method for silicon doping using a thermal neutron filter to increase the irradiation efficiency in the Japan Research Reactor No. 3 (JRR-3). Because of the restrictions caused by engineering design and radioactivity, aluminum mixed B$$_{4}$$C particles was adopted as a filter material. The burn-up characteristics of a thermal neutron filter containing a zillion B$$_{4}$$C particles were described. A method for evaluating neutron transmissivity as boron burning in the neutron filter was developed. The applicable scope of the method via experiments using thermal neutron filters was clarified. A method by which we could calculate the suitable diameter and density of B$$_{4}$$C particles was derived.



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Category:Nuclear Science & Technology



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