Experimental Observation on Sloshing-Ion Distribution and Associated Potential-Dip Formation

Yatsu, K.; Tamai, Hiroshi; Hoshino, Motonobu; Kusama, Y.; Kiwamoto, Y.; Kiyohara, Yoichi; Sakasai, A.; Wakaida, Ikuo; Inutake, M.; Sawada, K.; Miyoshi, S.

doi:10.1103/physrevlett.51.388

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…By using Langmuir and emissive probes, a dip in the plasma potential was observed in the region of minimum density of the sloshing ions. This result supports the concept of creating a thermal barrier on the basis of a sloshing-ion distribution [7][8][9]. will be suppressed.…”

Section: Gamma 6 Experimentssupporting

confidence: 83%

Contribution on tandem mirrors at the University of Tsukuba (GAMMA 6 and GAMMA 10)

Miyoshi¹

1985

Nucl. Fusion

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A survey is given of the experimental tandem mirror results obtained at the University of Tsukuba since 1978. The first tandem mirror, GAMMA 6, demonstrated the tandem mirror potential configuration and the validity of the Pastukhov confinement scaling law. GAMMA 10 demonstrated the plug/thermal-barrier potential distribution in axisymmetric end mirrors. The Pastukhov scaling for axial confinement was confirmed and improved radial confinement was observed, indicating the benefit of an axisymmetrized magnetic-field configuration.

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Section: Gamma 6 Experimentssupporting

confidence: 83%

Contribution on tandem mirrors at the University of Tsukuba (GAMMA 6 and GAMMA 10)

Miyoshi¹

1985

Nucl. Fusion

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“…This is much lower than the plug temperature. The pitch-angle distribution characterizing sloshing ions is observed with a secondary-emission-detector array, 13 showing a peak at 40° consistent with the neutral-beam injection angle.…”

Section: Thermal Barrier Formation and Plasma Confinement In The Axismentioning

confidence: 96%

Thermal Barrier Formation and Plasma Confinement in the Axisymmetrized Tandem Mirror GAMMA 10

et al. 1985

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In the axisymmetrized tandem mirror GAMMA 10, thermal-barrier and plug potentials have been formed in the axisymmetric mirror cells at both ends and directly measured with Au neutralbeam probes and end-loss analyzers. Strong end-loss reduction associated with the potential formation results in enhancement of the axial particle confinement time 100 times over the mirror confinement time without plugging, in reasonable agreement with Pastukhov formula. An empirical scaling on nonambipolar radial ion confinement time in the axisymmetrized field configuration is presented.PACS numbers: 52.55.Jd Current tandem mirror researches focus on improvement of confinement properties over the original configuration.

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I.1.5. The tandem mirror

Miyoshi

Kawabe

1983

J Fusion Energ

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Experimental Observation on Sloshing-Ion Distribution and Associated Potential-Dip Formation

Cited by 8 publications

References 7 publications

Contribution on tandem mirrors at the University of Tsukuba (GAMMA 6 and GAMMA 10)

Contribution on tandem mirrors at the University of Tsukuba (GAMMA 6 and GAMMA 10)

Thermal Barrier Formation and Plasma Confinement in the Axisymmetrized Tandem Mirror GAMMA 10

I.1.5. The tandem mirror

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