Transition between Isotope-Mixing and Nonmixing States in Hydrogen-Deuterium Mixture Plasmas

• IDA, Katsumi

• Nakata, Motoki

• TANAKA, Kenji

• YOSHINUMA, Mikiro

• Fujiwara, Yutaka

• SAKAMOTO, Ryuichi

• MOTOJIMA, Gen

• MASUZAKI, Suguru

• Kobayashi, Tatsuya

• Yamasaki, kotaro

抄録

0000-0002-0585-4561

The transition between isotope-mixing and nonmixing states in hydrogen-deuterium mixture plasmas is observed in the isotope (hydrogen and deuterium) mixture plasma in the Large Helical Device. In the nonmixing state, the isotope density ratio profile is nonuniform when the beam fueling isotope species differs from the recycling isotope species and the profile varies significantly depending on the ratio of the recycling isotope species, although the electron density profile shape is unchanged. The fast transition from nonmixing state to isotope-mixing state (nearly uniform profile of isotope ion density ratio) is observed associated with the change of electron density profile from peaked to hollow profile by the pellet injection near the plasma periphery. The transition from nonmixing to isotope-mixing state strongly correlates with the increase of turbulence measurements and the transition of turbulence state from TEM to ion temperature gradient is predicted by gyrokinetic simulation.

収録刊行物

• Physical Review Letters

  Physical Review Letters 124 025002-, 2020-01-14

  APS

詳細情報

• CRID: 1050851707402672384
• NII論文ID: 120007116715
• NII書誌ID: AA00773679
• ISSN: 00319007
• HANDLE: 10655/00012551
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/10568
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
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