TALIF measurements of atomic deuterium in toroidal divertor simulator NAGDIS-T

IF 2.3 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Materials and Energy Pub Date : 2025-02-13 DOI:10.1016/j.nme.2025.101898

Shin Kajita , Kota Hiraiwa , Hirohiko Tanaka , Ryuki Iwai , Mitsutoshi Aramaki , Ryo Yasuhara , Noriyasu Ohno

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引用次数: 0

Abstract

The behavior of neutral deuterium (D) atoms is important for understanding the physics in the divertor region of nuclear fusion reactors. It is necessary to introduce an active measurement when considering the application to detached plasmas, where recombination processes dominate the processes determining the population distribution. In this work, we have developed a two-photon absorption laser-induced fluorescence (TALIF) system in the toroidal divertor simulator NAGDIS-T to measure D atomic density. The absolute D atomic density was obtained by calibrating the signal with the krypton TALIF signal. The gas pressure and power dependence of the D atomic density is shown. The D atomic density was in the range of 1.6 × 10¹⁸–1.4 × 10¹⁹ m⁻³, and the temperature was estimated to be

<

0.4

eV

. The behavior of the D atoms is discussed in terms of the production process.

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来源期刊

Nuclear Materials and Energy Materials Science-Materials Science (miscellaneous)

CiteScore

3.70

自引率

15.40%

发文量

175

审稿时长

20 weeks

期刊介绍： The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.