研究報告38 - 1 論文 - Original
β線誘起X 線計測法およびモンテカルロシミュレーションによる大型ヘリカル装置LHD で使用され
た黒鉛タイル中のトリチウム深さ方向分布の非破壊測定
Non-destructive depth profiling of tritium in graphite tiles from Large Helical Device using β-ray induced X-ray spectrometry and Monte Carlo simulation
Lee Sun Eui1, 波多野雄治2, 原 正憲2, 増崎 貴3
1 富山大学理工学教育部 〒930-8555 富山市五福3190
2 富山大学研究推進機構水素同位体科学研究センター 〒930-8555 富山市五福3190
3 核融合科学研究所 〒 509-5292 土岐市下石町322-6
Sun Eui Lee1, Yuji Hatano2, Masanori Hara2, Suguru Masuzaki3
1Graduate School of Science and Engineering for Education, University of Toyama,
Gofuku 3190, Toyama 930-8555, Japan
2Hydrogen Isotope Research Center, Organization for Promotion of Research,
University of Toyama, Gofuku 3190, Toyama 930-8555, Japan
3National Institute for Fusion Science, Oroshi-cho 322-6, Toki 509-5292, Japan
Abstract
A special experimental setup was designed and constructed to perform simultaneous
multipoint measurements of β-ray induced X-ray spectra for non-destructive depth
profiling of tritium in plasma-facing tiles retrieved from fusion devices. The setup
consists of compact silicon drift detector and an airtight acrylic chamber. The plasmafacing
graphite tiles used in the deuterium experiment of Large Helical Device (LHD) in
National Institute for Fusion Science (NIFS) were examined. The obtained X-ray spectra
were simulated using Monte Carlo simulation tool kit Geant4. It has been found that
tritium penetrated beyond the carbon deposition layer.