Non-ideal Ballooning Mode Instability with Real Electron Inertia

H. Seto; M. Yagi; N. Aiba; Akinobu Matsuyama; Benjamin Daniel Dudson; X.Q. Xu

Non-ideal Ballooning Mode Instability with Real Electron Inertia

H. Seto, M. Yagi, N. Aiba, Akinobu Matsuyama, Benjamin Daniel Dudson, X.Q. Xu

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Impacts of electron inertia with an electron skin depth (ESD) longer than the realistic value used in early
numerical studies on non-ideal ballooning modes (NIBMs) are numerically investigated by a linearized 3-field
reduced MHD model. In this paper, 4 different ESDs,are used for an resistivity dependence study of the growth rate of NIBMs, where de s the real ESD and d*e = 10 corresponds
to an order of ESD used in a numerical study on collisionless ballooning mode (CBM) reported in [Kleva and Guzdar Phys. Plasmas 6, 116 (1999)]. In the case with the real ESD d*e = de, a transition from resistive ballooning mode (RBM) to CBM occurs in the edge relevant resistivity regime, while the electron inertia effect is overestimated and the growth rate is almost independent of resistivity in the cases with d∗e =√10de and 10de. These results indicate that the real ESD is one of key factors for the edge stability and turbulence analysis.

Original language	English
Number of pages	2
Journal	Plasma and Fusion Research
Publication status	Accepted/In press - 26 Oct 2016

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Cite this

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title = "Non-ideal Ballooning Mode Instability with Real Electron Inertia",

abstract = "Impacts of electron inertia with an electron skin depth (ESD) longer than the realistic value used in earlynumerical studies on non-ideal ballooning modes (NIBMs) are numerically investigated by a linearized 3-fieldreduced MHD model. In this paper, 4 different ESDs,are used for an resistivity dependence study of the growth rate of NIBMs, where de s the real ESD and d*e = 10 correspondsto an order of ESD used in a numerical study on collisionless ballooning mode (CBM) reported in [Kleva and Guzdar Phys. Plasmas 6, 116 (1999)]. In the case with the real ESD d*e = de, a transition from resistive ballooning mode (RBM) to CBM occurs in the edge relevant resistivity regime, while the electron inertia effect is overestimated and the growth rate is almost independent of resistivity in the cases with d∗e =√10de and 10de. These results indicate that the real ESD is one of key factors for the edge stability and turbulence analysis.",

author = "H. Seto and M. Yagi and N. Aiba and Akinobu Matsuyama and Dudson, {Benjamin Daniel} and X.Q. Xu",

note = "This is an author-produced version of the published paper. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details",

year = "2016",

month = oct,

day = "26",

language = "English",

journal = "Plasma and Fusion Research",

issn = "1880-6821",

publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",

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TY - JOUR

T1 - Non-ideal Ballooning Mode Instability with Real Electron Inertia

AU - Seto, H.

AU - Yagi, M.

AU - Aiba, N.

AU - Matsuyama, Akinobu

AU - Dudson, Benjamin Daniel

AU - Xu, X.Q.

N1 - This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2016/10/26

Y1 - 2016/10/26

N2 - Impacts of electron inertia with an electron skin depth (ESD) longer than the realistic value used in earlynumerical studies on non-ideal ballooning modes (NIBMs) are numerically investigated by a linearized 3-fieldreduced MHD model. In this paper, 4 different ESDs,are used for an resistivity dependence study of the growth rate of NIBMs, where de s the real ESD and d*e = 10 correspondsto an order of ESD used in a numerical study on collisionless ballooning mode (CBM) reported in [Kleva and Guzdar Phys. Plasmas 6, 116 (1999)]. In the case with the real ESD d*e = de, a transition from resistive ballooning mode (RBM) to CBM occurs in the edge relevant resistivity regime, while the electron inertia effect is overestimated and the growth rate is almost independent of resistivity in the cases with d∗e =√10de and 10de. These results indicate that the real ESD is one of key factors for the edge stability and turbulence analysis.

AB - Impacts of electron inertia with an electron skin depth (ESD) longer than the realistic value used in earlynumerical studies on non-ideal ballooning modes (NIBMs) are numerically investigated by a linearized 3-fieldreduced MHD model. In this paper, 4 different ESDs,are used for an resistivity dependence study of the growth rate of NIBMs, where de s the real ESD and d*e = 10 correspondsto an order of ESD used in a numerical study on collisionless ballooning mode (CBM) reported in [Kleva and Guzdar Phys. Plasmas 6, 116 (1999)]. In the case with the real ESD d*e = de, a transition from resistive ballooning mode (RBM) to CBM occurs in the edge relevant resistivity regime, while the electron inertia effect is overestimated and the growth rate is almost independent of resistivity in the cases with d∗e =√10de and 10de. These results indicate that the real ESD is one of key factors for the edge stability and turbulence analysis.

M3 - Article

SN - 1880-6821

JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

ER -