Investigations of the radial propagation of blob-like structure in a non-confined electron cyclotron resonance heated plasma on Q-shu University Experiment with a Steady-State Spherical Tokamak

R. Ogata, K. Hanada, N. Nishino, H. Q. Liu, H. Zushi, M. Ishiguro, T. Ikeda, K. Nakamura, A. Fujisawa, H. Idei, M. Hasegawa, S. Kawasaki, H. Nakashima, A. Higashijima

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A study of radial propagation and electric fields induced by charge separation in blob-like structures has been performed in a non-confined cylindrical electron cyclotron resonance heating plasma on Q-shu University Experiment with a Steady-State Spherical Tokamak using a fast-speed camera and a Langmuir probe. The radial propagation of the blob-like structures is found to be driven by E × B drift. Moreover, these blob-like structures were found to have been accelerated, and the property of the measured radial velocities agrees with the previously proposed model C. Theiler, Phys. Rev. Lett. 103, 065001 (2009). Although the dependence of the radial velocity on the connection length of the magnetic field appeared to be different, a plausible explanation based on enhanced short-circuiting of the current path can be proposed.

Original languageEnglish
Article number092306
JournalPhysics of Plasmas
Volume18
Issue number9
DOIs
Publication statusPublished - Sep 1 2011

Fingerprint

electron cyclotron resonance
radial velocity
plasma heating
propagation
polarization (charge separation)
electrostatic probes
cameras
electric fields
magnetic fields

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Investigations of the radial propagation of blob-like structure in a non-confined electron cyclotron resonance heated plasma on Q-shu University Experiment with a Steady-State Spherical Tokamak. / Ogata, R.; Hanada, K.; Nishino, N.; Liu, H. Q.; Zushi, H.; Ishiguro, M.; Ikeda, T.; Nakamura, K.; Fujisawa, A.; Idei, H.; Hasegawa, M.; Kawasaki, S.; Nakashima, H.; Higashijima, A.

In: Physics of Plasmas, Vol. 18, No. 9, 092306, 01.09.2011.

Research output: Contribution to journalArticle

@article{98d7f757d39c4e36b92fc13dc956865f,
title = "Investigations of the radial propagation of blob-like structure in a non-confined electron cyclotron resonance heated plasma on Q-shu University Experiment with a Steady-State Spherical Tokamak",
abstract = "A study of radial propagation and electric fields induced by charge separation in blob-like structures has been performed in a non-confined cylindrical electron cyclotron resonance heating plasma on Q-shu University Experiment with a Steady-State Spherical Tokamak using a fast-speed camera and a Langmuir probe. The radial propagation of the blob-like structures is found to be driven by E × B drift. Moreover, these blob-like structures were found to have been accelerated, and the property of the measured radial velocities agrees with the previously proposed model C. Theiler, Phys. Rev. Lett. 103, 065001 (2009). Although the dependence of the radial velocity on the connection length of the magnetic field appeared to be different, a plausible explanation based on enhanced short-circuiting of the current path can be proposed.",
author = "R. Ogata and K. Hanada and N. Nishino and Liu, {H. Q.} and H. Zushi and M. Ishiguro and T. Ikeda and K. Nakamura and A. Fujisawa and H. Idei and M. Hasegawa and S. Kawasaki and H. Nakashima and A. Higashijima",
year = "2011",
month = "9",
day = "1",
doi = "10.1063/1.3640494",
language = "English",
volume = "18",
journal = "Physics of Plasmas",
issn = "1070-664X",
publisher = "American Institute of Physics Publising LLC",
number = "9",

}

TY - JOUR

T1 - Investigations of the radial propagation of blob-like structure in a non-confined electron cyclotron resonance heated plasma on Q-shu University Experiment with a Steady-State Spherical Tokamak

AU - Ogata, R.

AU - Hanada, K.

AU - Nishino, N.

AU - Liu, H. Q.

AU - Zushi, H.

AU - Ishiguro, M.

AU - Ikeda, T.

AU - Nakamura, K.

AU - Fujisawa, A.

AU - Idei, H.

AU - Hasegawa, M.

AU - Kawasaki, S.

AU - Nakashima, H.

AU - Higashijima, A.

PY - 2011/9/1

Y1 - 2011/9/1

N2 - A study of radial propagation and electric fields induced by charge separation in blob-like structures has been performed in a non-confined cylindrical electron cyclotron resonance heating plasma on Q-shu University Experiment with a Steady-State Spherical Tokamak using a fast-speed camera and a Langmuir probe. The radial propagation of the blob-like structures is found to be driven by E × B drift. Moreover, these blob-like structures were found to have been accelerated, and the property of the measured radial velocities agrees with the previously proposed model C. Theiler, Phys. Rev. Lett. 103, 065001 (2009). Although the dependence of the radial velocity on the connection length of the magnetic field appeared to be different, a plausible explanation based on enhanced short-circuiting of the current path can be proposed.

AB - A study of radial propagation and electric fields induced by charge separation in blob-like structures has been performed in a non-confined cylindrical electron cyclotron resonance heating plasma on Q-shu University Experiment with a Steady-State Spherical Tokamak using a fast-speed camera and a Langmuir probe. The radial propagation of the blob-like structures is found to be driven by E × B drift. Moreover, these blob-like structures were found to have been accelerated, and the property of the measured radial velocities agrees with the previously proposed model C. Theiler, Phys. Rev. Lett. 103, 065001 (2009). Although the dependence of the radial velocity on the connection length of the magnetic field appeared to be different, a plausible explanation based on enhanced short-circuiting of the current path can be proposed.

UR - http://www.scopus.com/inward/record.url?scp=80053524376&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053524376&partnerID=8YFLogxK

U2 - 10.1063/1.3640494

DO - 10.1063/1.3640494

M3 - Article

AN - SCOPUS:80053524376

VL - 18

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1070-664X

IS - 9

M1 - 092306

ER -