Measurement of Peripheral Electron Temperature by Electron Cyclotron Emission during the H-Mode Transition in JFT-2M Tokamak

Hoshino, K.; Yamamoto, T.; Kawashima, H.; Yamauchi, Toshihiko; Uesugi, Yoshihiko; Kasai, S.; Kawakami, T.; Maeda, Hideaki; Matoba, T.; Matsuda, Toshiaki; Matsumoto, Hiroshi; Miura, Y.; Mori, Masahiro; Odajima, K.; Ogawa, Hideyuki; Ogawa, Toshihide; Ohtsuka, Hokuto; Sengoku, S.; Shoji, T.; Suzuki, Norio; Tamai, Hiroshi; Hasegawa, Mitsuru; Funahashi, A.

doi:10.1143/jpsj.56.1750

Cited by 28 publications

(15 citation statements)

References 11 publications

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“…The second one is the Archimedean method. Hoshino and Endo [20] measured liquid Se-Te mixtures under high pressure using sinkers made of sapphire or sintered alumina with known specific gravity. In this method, however, it is hard to find suitable materials for the sinker which has a specific gravity corresponding to the density of fluid Se in the critical region (1 -3 g and has no chemical reaction with fluid Se.…”

Section: Semiconductor-metal-insulator Transitions In Fluid Sementioning

confidence: 99%

Density Measurements for Expanded Fluid Selenium up to the Liquid‐vapour Supercritical Region by the X‐Ray Absorption Method

Hosokawa

Kuboi

Tamura

1997

Ber Bunsenges Phys Chem

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Density of expanded fluid selenium was measured in the temperature and pressure ranges up to 1650°C and 700 bar including the liquid‐vapour critical point by the x‐ray absorption method. For the measurements, a new type of cell made of polycrystalline sapphire and a high‐pressure vessel of authors' own design were developed. The critical temperature, pressure and density of 1615 ± 5°C, 385 ± 5bar, 1.85 ± 0.03g cm−3, respectively, were obtained. We found that isochores bend in the semiconductor‐metal transition region. The shape of the isochore seems an elongated inverse‐S letter. The diameter of the liquid‐vapour coexistence curve is deviated from the law of the rectilinear diameter to the liquid side slightly around the SC‐M transition region and strongly near the critical point. A distinct crossover was also found in the critical exponent β; the value of β drastically changes from 0.30 to 0.10 when the critical point is approached.

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Section: Semiconductor-metal-insulator Transitions In Fluid Sementioning

confidence: 99%

Density Measurements for Expanded Fluid Selenium up to the Liquid‐vapour Supercritical Region by the X‐Ray Absorption Method

Hosokawa

Kuboi

Tamura

1997

Ber Bunsenges Phys Chem

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“…The charge exchange loss of the core plasma by this neutral influx is estimated to be 200 kW when the total heat outflow to the SOL plasma is 1 MW. (6) The erosion rate of the limiter has been estimated. (7) A minimum clearance has been determined, in order to get rid of the unfavourable effects indicated in points (4)- (6).…”

Section: Appendix Poloidal Distribution Of Source Fluxesmentioning

confidence: 99%

“…(6) The erosion rate of the limiter has been estimated. (7) A minimum clearance has been determined, in order to get rid of the unfavourable effects indicated in points (4)- (6). The interaction with the limiter decays as exp(-d/Xo) when the clearance d increases.…”

Section: Appendix Poloidal Distribution Of Source Fluxesmentioning

confidence: 99%

“…The flow pattern and the temperature and density profiles have poloidal asymmetry. The poloidal structure also depends on the heat and energy flux distributions at the core/SOL boundary, Q T (0) and T (6). We do not employ the in/out asymmetry of the heat and particle fluxes from the main plasma.…”

Section: Appendix Poloidal Distribution Of Source Fluxesmentioning

confidence: 99%

“…Recycled neutrals impinge on the core plasma and decrease the temperature of the plamsa inside the separatrix. It has been demonstrated [5,6] that a material limiter can influence the global plasma confinement even if there is a finite distance between the plasma and the limiter (i.e. when the plasma is limited by a magnetic separatrix).…”

Section: Introductionmentioning

confidence: 99%

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Two-dimensional analysis of limiter/divertor transition in scrape-off layer plasmas

Ueda

Itoh

1989

Nucl. Fusion

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The structures of scrape-off layer and divertor plasmas have been studied numerically with a neutral code and a two-dimensional fluid code. Doublet-III is taken as an example for an open divertor configuration. A decisive parameter is the distance between the plasma surface (determined by the magnetic separatrix) and the limiter, which is varied in order to assess the interaction of the plasma with the limiter as well as the effect of neutrals on the main plasma. The minimum value of the limiter clearance needed to prevent plasma-limiter interaction is determined. The scaling of the edge temperature and the dependence of the e-folding length of the scrape-off layer plasma on the heating power are obtained.

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Particle accumulation at the edge observed in ne and Te profiles of H-mode JFT-2M plasma

et al. 1988

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Measurement of Peripheral Electron Temperature by Electron Cyclotron Emission during the H-Mode Transition in JFT-2M Tokamak

Cited by 28 publications

References 11 publications

Density Measurements for Expanded Fluid Selenium up to the Liquid‐vapour Supercritical Region by the X‐Ray Absorption Method

Density Measurements for Expanded Fluid Selenium up to the Liquid‐vapour Supercritical Region by the X‐Ray Absorption Method

Two-dimensional analysis of limiter/divertor transition in scrape-off layer plasmas

Particle accumulation at the edge observed in ne and Te profiles of H-mode JFT-2M plasma

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