Isotope effects on energy, particle transport and turbulence in electron cyclotron resonant heating plasma of the Large Helical Device

• TANAKA, Kenji

• Ohtani, Yoshiaki

• Nakata, Motoki

• Warmer, Felix

• TSUJIMIRA, Toru

• TAKEMURA, Yuki

• Kinoshita, T.

• TAKAHASHI, Hiromi

• YOKOYAMA, Masayuki

• SEKI, Ryosuke

• IGAMI, Hiroe

• YOSHIMURA, Yasuo

• KUBO, Shin

• SHIMOZUMA, Takashi

• TOKUZAWA, Tokihiko

• AKIYAMA, Tsuyoshi

• YAMADA, Ichihiro

• YASUHARA, Ryo

• FUNABA, Hisamichi

• YOSHINUMA, Mikiro

• IDA, Katsumi

• GOTO, Motoshi

• MOTOJIMA, Gen

• SHOJI, Mamoru

• MASUZAKI, Suguru

• MICHAEL, Clive A.

• Vacheslavov, L.N.

• OSAKABE, Masaki

• MORISAKI, Tomohiko

抄録

https://orcid.org/0000-0002-1606-3204

Positive isotope effects have been found in electron cyclotron resonant heating plasma of the Large Helical Device (LHD). The global energy confinement time (τE) in deuterium (D) plasma is 16% better than in hydrogen (H) plasma for the same line-averaged density and absorption power. The power balance analyses showed a clear reduction in ion energy transport, while electron energy transport does not change dramatically. The global particle confinement time (τp) is degraded in D plasma; τp in D plasma is 20% worse than in H plasma for the same line-averaged density and absorption power. The difference in the density profile was not due to the neutral or impurity sources, but rather was due to the difference in the transport. Ion scale turbulence levels show isotope effects. The core turbulence (ρ  =  0.5–0.8) level is higher in D plasma than in H plasma in the low collisionality regime and is lower in D plasma than in H plasma. The density gradient and collisionality play a role in the core turbulence level.

収録刊行物

• Nuclear Fusion

  Nuclear Fusion 59 (12), 126040-, 2019-10-18

  IOP Publishing

キーワード

• isotope effects
• turbulence
• LHD
• transport

詳細情報

• CRID: 1050852018416955648
• NII論文ID: 120007126859
• NII書誌ID: AA12472385
• ISSN: 17414326
• ISSN: 00295515
• ISSN: http://id.crossref.org/issn/00295515
• DOI: 10.1088/1741-4326/ab4237
• HANDLE: 10655/00012632
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/10650
• Web Site: http://iopscience.iop.org/article/10.1088/1741-4326/ab4237
• Web Site: http://iopscience.iop.org/article/10.1088/1741-4326/ab4237/pdf
• Web Site: https://iopscience.iop.org/article/10.1088/1741-4326/ab4237/pdf
• Web Site: https://iopscience.iop.org/article/10.1088/1741-4326/ab4237
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN