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Title: 2-D Evaluation of Bred Tritium Using Neutron Imaging Plate
Authors: Mukai, K.
Ogino, Y.
Yagi, J.
Konishi, S.
Author's alias: 向井, 啓祐
荻野, 靖之
八木, 重郎
小西, 智之
Keywords: Neutron generation
Neutron measurement
Ceramic breeder
Tritium breeding
Blanket
Radiography
Issue Date: Jun-2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Journal title: IEEE Transactions on Plasma Science
Volume: 48
Issue: 6
Start page: 1831
End page: 1835
Abstract: Tritium breeding performance of a fusion blanket is a key parameter for the self-sufficient fueling of a fusion reactor, and thus designed to validate the performance of a neutronics experiment. Measuring the 2-D distribution of bred tritium is challenging via conventional methods such as β -ray counting from an irradiated lithium sample using a liquid scintillation counter (LSC) and a single-crystal diamond detector with a thin ⁶ LiF film, because they are point detectors which require many measurements. In this article, 2-D distribution of the low quantity produced tritium was evaluated with a neutron imaging plate (NIP) with a Gd convertor by estimating the loss of neutrons via a capture reaction by Li. Deuterium–deuterium (DD) fusion neutrons were generated using a compact fusion device at an average neutron production rate of 1.5×10⁵ n/s by applying high voltages. A neutron image with “shadows” projected by thermal neutron capture reactions of ⁶ Li(n, α ) and 10 ^B (n, α ) was successfully obtained. The experimentally evaluated values were confirmed to be consistent with the total number of capture reactions calculated using a neutron transport code. The results suggest that the approach could be a facile method for the 2-D evaluation of bred tritium.
Rights: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/252433
DOI(Published Version): 10.1109/tps.2019.2955497
Appears in Collections:Journal Articles

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