TY - JOUR
T1 - A Method of Knock-on Tail Observation Accounting Temperature Fluctuation Using 6Li+T/D+T Reaction in Deuterium Plasma
AU - Kawamoto, Yasuko
AU - Matsuura, Hideaki
N1 - Publisher Copyright:
© 2017 The Japan Society of Plasma Science and Nuclear Fusion Research. All Rights Reserved.
PY - 2017
Y1 - 2017
N2 - It is important to understand the phenomena occurring in nuclear burning plasmas in order to operate fusion reactors. Although multiple studies have been conducted on nuclear elastic scattering (NES), only few experiments have focused on the observation of a knock-on tail via NES in nuclear burning plasmas. NES is an important phenomenon because it occurs in various plasmas and affects their energy balance. As for the observation of a knock-on tail, a method using γ-rays/neutrons generated from 6Li + d→7 -Li* + p, 6Li + d→ 7Be* + n, or D + d→3He + n reactions in a proton-beam-injected deuterium plasma has been proposed. However, there is a possibility to be unable to distinguish whether the main factor affecting the reaction rates is the plasma temperature or the formation of a knock-on tail. To avoid this confusion, herein, we proposed a method based on 6Li + t→8Li* + p or D + t→4He + n reactions. These reactions can reveal the plasma temperature without the influence of a knock-on tail because the triton distribution function in deuterium plasmas is remarkably distorted from Maxwellian. The procedure and utilization possibility of the proposed method are discussed.
AB - It is important to understand the phenomena occurring in nuclear burning plasmas in order to operate fusion reactors. Although multiple studies have been conducted on nuclear elastic scattering (NES), only few experiments have focused on the observation of a knock-on tail via NES in nuclear burning plasmas. NES is an important phenomenon because it occurs in various plasmas and affects their energy balance. As for the observation of a knock-on tail, a method using γ-rays/neutrons generated from 6Li + d→7 -Li* + p, 6Li + d→ 7Be* + n, or D + d→3He + n reactions in a proton-beam-injected deuterium plasma has been proposed. However, there is a possibility to be unable to distinguish whether the main factor affecting the reaction rates is the plasma temperature or the formation of a knock-on tail. To avoid this confusion, herein, we proposed a method based on 6Li + t→8Li* + p or D + t→4He + n reactions. These reactions can reveal the plasma temperature without the influence of a knock-on tail because the triton distribution function in deuterium plasmas is remarkably distorted from Maxwellian. The procedure and utilization possibility of the proposed method are discussed.
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U2 - 10.1585/pfr.12.1403043
DO - 10.1585/pfr.12.1403043
M3 - Article
AN - SCOPUS:85115646005
VL - 12
SP - 1
EP - 7
JO - Plasma and Fusion Research
JF - Plasma and Fusion Research
SN - 1880-6821
ER -