Impurity Injection to Plasmas with Improved Plasma Confinement

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Author(s)

Abstract

Impurity gas injection effects were investigated in ELMy H-mode and reversed shear plasmas from viewpoints of divertor heat flux and power balance. In ELMy H-mode discharges with Ar seeding, the pedestal stored energy and good energy confinement was maintained as the radiation fraction, P_<rad>/P_<net> was increasing up to 0.88. The ELM energy deposition to the divertor normalized by the pedestal stored energy decreased moderately as a function of P_<rad>/P_<net> while ELM frequency was reduced significantly. With Ne seeding and moderate D_2 gas puffing rate, the radiative divertor plasma was produced in a reversed shear plasma with good plasma confinement H_<89> ~ 1.8. Radiation loss profiles and divertor heat flux profiles clearly revealed the divertor plasma detachment due to X-point MARFE.

Journal

  • Journal of plasma and fusion research

    Journal of plasma and fusion research 77(10), 1027-1034, 2001-10-25

    プラズマ・核融合学会

References:  7

  • <no title>

    ITAMI K.

    Fusion Energy 1997, 1996

    Cited by (1)

  • <no title>

    ITAMI K.

    IAEA, Vienna 1, 385, 1996

    Cited by (1)

  • <no title>

    KUBO H.

    Nucl Fusion 41, 227, 2001

    Cited by (3)

  • <no title>

    ITAMI K.

    Phys. Rev. Lett. 78, 1267, 1997

    Cited by (3)

  • <no title>

    KUBO H.

    Proc. of 28th EPS Conf. on Cont. Fusion and Plasma Physics, 2001

    Cited by (1)

  • <no title>

    ITAMI K.

    J. Nucl. Mater. 266-269, 1097, 1999

    Cited by (1)

  • <no title>

    SAKURAI S.

    J. Nucl. Mater. 290-293, 1002, 2001

    DOI  Cited by (1)

Codes

  • NII Article ID (NAID)
    110003825685
  • NII NACSIS-CAT ID (NCID)
    AN10401672
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    09187928
  • NDL Article ID
    5956369
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z15-8
  • Data Source
    CJP  NDL  NII-ELS  NDL-Digital 
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