Core magnetic islands and plasma confinement in the H-1NF heliac

Santhosh T.A. Kumar; Boyd D. Blackwell; John Howard; Jeffrey H. Harris

doi:10.1063/1.3474946

Core magnetic islands and plasma confinement in the H-1NF heliac

Santhosh T.A. Kumar, Boyd D. Blackwell, John Howard, Jeffrey H. Harris

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

4 Citations (Scopus)

Abstract

Plasma confinement in the vicinity of vacuum magnetic islands near the magnetic axis in the H-1NF heliac [S. M. Hamberger, Fusion Technol. 17, 123 (1990)] has been experimentally studied in a low temperature argon plasma. Experimental results indicate that, under favorable conditions, these low order (m=2) islands near the core of the plasma serve as "pockets" of higher electron density. This results in significant profile modifications including enhancement of the core radial electric field to a large positive value, possibly through an electron-root ambipolar condition. The characteristics of islands are found to be dependent on the plasma collisionality and island width.

Original language	English
Article number	082503
Journal	Physics of Plasmas
Volume	17
Issue number	8
DOIs	https://doi.org/10.1063/1.3474946
Publication status	Published - Aug 2010

Access to Document

10.1063/1.3474946

Cite this

@article{e2edb31dcc544726946024eb96a07397,

title = "Core magnetic islands and plasma confinement in the H-1NF heliac",

abstract = "Plasma confinement in the vicinity of vacuum magnetic islands near the magnetic axis in the H-1NF heliac [S. M. Hamberger, Fusion Technol. 17, 123 (1990)] has been experimentally studied in a low temperature argon plasma. Experimental results indicate that, under favorable conditions, these low order (m=2) islands near the core of the plasma serve as {"}pockets{"} of higher electron density. This results in significant profile modifications including enhancement of the core radial electric field to a large positive value, possibly through an electron-root ambipolar condition. The characteristics of islands are found to be dependent on the plasma collisionality and island width.",

author = "Kumar, {Santhosh T.A.} and Blackwell, {Boyd D.} and John Howard and Harris, {Jeffrey H.}",

year = "2010",

month = aug,

doi = "10.1063/1.3474946",

language = "English",

volume = "17",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "8",

}

TY - JOUR

T1 - Core magnetic islands and plasma confinement in the H-1NF heliac

AU - Kumar, Santhosh T.A.

AU - Blackwell, Boyd D.

AU - Howard, John

AU - Harris, Jeffrey H.

PY - 2010/8

Y1 - 2010/8

N2 - Plasma confinement in the vicinity of vacuum magnetic islands near the magnetic axis in the H-1NF heliac [S. M. Hamberger, Fusion Technol. 17, 123 (1990)] has been experimentally studied in a low temperature argon plasma. Experimental results indicate that, under favorable conditions, these low order (m=2) islands near the core of the plasma serve as "pockets" of higher electron density. This results in significant profile modifications including enhancement of the core radial electric field to a large positive value, possibly through an electron-root ambipolar condition. The characteristics of islands are found to be dependent on the plasma collisionality and island width.

AB - Plasma confinement in the vicinity of vacuum magnetic islands near the magnetic axis in the H-1NF heliac [S. M. Hamberger, Fusion Technol. 17, 123 (1990)] has been experimentally studied in a low temperature argon plasma. Experimental results indicate that, under favorable conditions, these low order (m=2) islands near the core of the plasma serve as "pockets" of higher electron density. This results in significant profile modifications including enhancement of the core radial electric field to a large positive value, possibly through an electron-root ambipolar condition. The characteristics of islands are found to be dependent on the plasma collisionality and island width.

UR - http://www.scopus.com/inward/record.url?scp=77956332095&partnerID=8YFLogxK

U2 - 10.1063/1.3474946

DO - 10.1063/1.3474946

M3 - Article

SN - 1070-664X

VL - 17

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 8

M1 - 082503

ER -

Core magnetic islands and plasma confinement in the H-1NF heliac

Abstract

Access to Document

Other files and links

Fingerprint

Cite this