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Journal Articles

Theory of the Newcomb equation and applications to MHD stability analysis of a tokamak

Tokuda, Shinji; Aiba, Nobuyuki*

Journal of Plasma and Fusion Research SERIES, Vol.6, p.207 - 209, 2004/00

Recent progress in the theory of the Newcomb equation is reported. Emphasis is put on the analysis of external modes including peeling modes (high $$n$$ kink modes), where $$n$$ is the toroidal mode number. A theory for low $$n$$ external modes is developed so that it is also useful for the analysis of resistive wall modes.

Journal Articles

Inner layer problem for ideal MHD modes in a toroidal system

Tokuda, Shinji

Proceedings of 30th EPS Conference on Controlled Fusion and Plasma Physics (CD-ROM), 4 Pages, 2003/00

When we solve the eigenvalue problem associated with the two-dimensional Newcomb equation, we can identify the stability of a tokamak plasma against ideal MHD perturbations. The eigenvalue problem does not give the physical growth rate when the plasma is unstable. However, we can determine the growth rate by constructing a dispersion relation that gives the relation between the growth rate and the eigenvalue. It is expected that the dispersion relation provides an effective and fast method of stability analysis of MHD modes close to the marginal stability against ideal MHD perturbations, and the relation can be extended for non-ideal MHD modes close to the marginal stability.

Journal Articles

Singular point analysis

Tokuda, Shinji

Purazuma, Kaku Yugo Gakkai-Shi, 78(9), p.913 - 924, 2002/09

An introductory review is given on recent developments in the methods for stability analysis of a toroidally confined plasma. Emphasis is put on the perturbation analysis of a magnetohydrodynamic system that has the marginally stable state as a terminal point of continuous spectra. We address ourselves to the asymptotic matching method pertinent to such a problem. The Newcomb equation and inner-layer equations are essential ingredients in the methods and the numerical methods for solving them are discussed.

Journal Articles

A New approach to the two-dimensional Newcomb equation

Tokuda, Shinji

Journal of Accelerator and Plasma Research, 5(1), p.87 - 108, 2000/00

no abstracts in English

Journal Articles

Evaluation of perturbation effect due to fission-source change in eigenvalue problems by Monte Carlo methods

Nagaya, Yasunobu; Mori, Takamasa

Proceedings of the ANS International Topical Meeting on Advances in Reactor Physics and Mathematics and Computation into the Next Millennium (PHYSOR2000) (CD-ROM), p.13 - 0, 2000/00

no abstracts in English

Journal Articles

A New eigenvalue problem associated with the two-dimensional Newcomb equation without continuous spectra

Tokuda, Shinji;

Physics of Plasmas, 6(8), p.3012 - 3026, 1999/08

 Times Cited Count:59 Percentile:83.33(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

A New eigenvalue problem associated with the two-dimensional Newcomb equation without continuous spectra

Tokuda, Shinji;

Tokei Suri Kenkyujo Kyodo Kenkyu Ripoto, 110, p.70 - 77, 1998/03

no abstracts in English

JAEA Reports

MARG2D code, 1; Eigenvalue problem for two dimensional Newcomb equation

Tokuda, Shinji;

JAERI-Data/Code 97-040, 105 Pages, 1997/10

JAERI-Data-Code-97-040.pdf:2.32MB

no abstracts in English

Journal Articles

Eigenvalue method for the outer-region matching data in resistive MHD stability analysis

Tokuda, Shinji;

Purazuma, Kaku Yugo Gakkai-Shi, 73(10), p.1141 - 1154, 1997/10

no abstracts in English

Journal Articles

Measurement of flux tilt and eigenvalue separation in axially decoupled core

Ando, Masaki; ; Nishina, Kojiro*;

Journal of Nuclear Science and Technology, 34(5), p.445 - 453, 1997/05

 Times Cited Count:6 Percentile:47.14(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Error estimations and their biases in Monte Carlo eigenvalue calculations

Ueki, Taro*; Mori, Takamasa; Nakagawa, Masayuki

Nuclear Science and Engineering, 125(1), p.1 - 11, 1997/00

no abstracts in English

JAEA Reports

MARG1D: One dimensional outer region matching data code

Tokuda, Shinji;

JAERI-Data/Code 95-011, 71 Pages, 1995/08

JAERI-Data-Code-95-011.pdf:1.94MB

no abstracts in English

Journal Articles

Boundary element techniques for two-dimensional nuclear reactor caluculations

Eng.Anal., 4(4), p.190 - 198, 1987/04

no abstracts in English

Journal Articles

Experimental observation of the dynamic response of the JT-60 vacuum vessel

; ; Okubo, Minoru

Transactions of the American Nuclear Society, 52, p.232 - 233, 1986/00

no abstracts in English

Journal Articles

A Band theory of magnetic structure of $$alpha$$-and $$beta$$-manganese

; ; ;

Journal of Magnetism and Magnetic Materials, 31-34, p.41 - 42, 1983/00

 Times Cited Count:4 Percentile:35.42(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Dynamic response of the JT-60 vacuum vessel under the electromagnetic forces

; ; ; ; ;

Nucl.Eng.Des., 71, p.161 - 172, 1982/00

 Times Cited Count:5 Percentile:52.74(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Dynamic analysis method for a large complicated structure and application to a fusion device

;

Nucl.Eng.Des., 60, p.297 - 309, 1980/00

 Times Cited Count:2 Percentile:33.47(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

A General dimensional neutron diffusion calculation code:ADC

;

JAERI 1260, 35 Pages, 1979/03

JAERI-1260.pdf:1.47MB

no abstracts in English

26 (Records 1-20 displayed on this page)