Study of High Energy Ions Generated by Ion Cyclotron Range of Frequency Heating in Deuterium Plasma

IF 2.1 4区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Journal of Fusion Energy Pub Date : 2026-02-18 DOI:10.1007/s10894-026-00561-3

Ryosuke Seki, Tetsuo Seki, Shuji Kamio, Hiroshi Kasahara, Kenji Saito, Hideo Nuga, Kunihiro Ogawa, Mitsutaka Isobe, Jialei Wang, Gorou Nomura, Motonari Kanda, Masaki Osakabe

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引用次数: 0

Abstract

Second harmonic deuteron heating in the ion cyclotron range of frequency (ICRF) was evaluated based on neutron measurements newly installed before a deuterium experimental campaign of the LHD. In deuteron plasmas, it was confirmed that the neutron emission rate increased with higher ICRF injection power. Fast deuterons with energy above 500 keV could be measured by a diamond neutral particle analyzer, when the minority proton ratio was less than 1%. On the other hand, a significant increase in the neutron emission rate, due to fast deuterons produced by ICRF second harmonic heating, was not observed, even in the case of ICRF superimposing on neutral beam injection (NBI). In experiments when the ICRF resonance layer was located near the magnetic axis, fast-ion driven instabilities due to the ICRF heating were observed for the first time at the LHD.

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氘等离子体中离子回旋加速器频率加热产生高能离子的研究

基于LHD氘实验前新安装的中子测量装置，对离子回旋加速器频率范围内的二次谐波氘加热进行了评估。在氘核等离子体中，中子发射率随ICRF注入功率的增加而增加。当少数质子比小于1%时，金刚石中性粒子分析仪可以测量能量大于500kev的快速氘核。另一方面，即使在中性束注入（NBI）叠加ICRF的情况下，也没有观察到由于ICRF二次谐波加热产生的快速氘核而导致的中子发射率的显著增加。在实验中，当ICRF共振层位于磁轴附近时，在LHD上首次观察到由ICRF加热引起的快速离子驱动不稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Fusion Energy 工程技术-核科学技术

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

2.3 months

期刊介绍： The Journal of Fusion Energy features original research contributions and review papers examining and the development and enhancing the knowledge base of thermonuclear fusion as a potential power source. It is designed to serve as a journal of record for the publication of original research results in fundamental and applied physics, applied science and technological development. The journal publishes qualified papers based on peer reviews. This journal also provides a forum for discussing broader policies and strategies that have played, and will continue to play, a crucial role in fusion programs. In keeping with this theme, readers will find articles covering an array of important matters concerning strategy and program direction.