Electron density profile measurements from hydrogen line intensity ratio method in Versatile Experimental Spherical Torus

Yoosung Kim; Yue Jiang Shi; Jeong Hun Yang; Seongcheol Kim; Young Gi Kim; Jeong Jeung Dang; Seongmoo Yang; Jungmin Jo; Soo Ghee Oh; Kyoung Jae Chung; Y. S. Hwang

doi:10.1063/1.4960535

Electron density profile measurements from hydrogen line intensity ratio method in Versatile Experimental Spherical Torus

Yoosung Kim
, Yue Jiang Shi
, Jeong Hun Yang
, Seongcheol Kim
, Young Gi Kim
, Jeong Jeung Dang
, Seongmoo Yang
, Jungmin Jo
, Soo Ghee Oh
, Kyoung Jae Chung
, Y. S. Hwang

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

1 Scopus citations

Abstract

Electron density profiles of versatile experiment spherical torus plasmas are measured by using a hydrogen line intensity ratio method. A fast-frame visible camera with appropriate bandpass filters is used to detect images of Balmer line intensities. The unique optical system makes it possible to take images of H_α and H_β radiation simultaneously, with only one camera. The frame rate is 1000 fps and the spatial resolution of the system is about 0.5 cm. One-dimensional local emissivity profiles have been obtained from the toroidal line of sight with viewing dumps. An initial result for the electron density profile is presented and is in reasonable agreement with values measured by a triple Langmuir probe.

Original language	English (US)
Article number	11E540
Journal	Review of Scientific Instruments
Volume	87
Issue number	11
DOIs	https://doi.org/10.1063/1.4960535
State	Published - Nov 1 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Instrumentation

Access to Document

10.1063/1.4960535

Cite this

@article{64640c038cae44f9a16b7b2c84d5c904,

title = "Electron density profile measurements from hydrogen line intensity ratio method in Versatile Experimental Spherical Torus",

abstract = "Electron density profiles of versatile experiment spherical torus plasmas are measured by using a hydrogen line intensity ratio method. A fast-frame visible camera with appropriate bandpass filters is used to detect images of Balmer line intensities. The unique optical system makes it possible to take images of Hα and Hβ radiation simultaneously, with only one camera. The frame rate is 1000 fps and the spatial resolution of the system is about 0.5 cm. One-dimensional local emissivity profiles have been obtained from the toroidal line of sight with viewing dumps. An initial result for the electron density profile is presented and is in reasonable agreement with values measured by a triple Langmuir probe.",

author = "Yoosung Kim and Shi, \{Yue Jiang\} and Yang, \{Jeong Hun\} and Seongcheol Kim and Kim, \{Young Gi\} and Dang, \{Jeong Jeung\} and Seongmoo Yang and Jungmin Jo and Oh, \{Soo Ghee\} and Chung, \{Kyoung Jae\} and Hwang, \{Y. S.\}",

note = "Publisher Copyright: {\textcopyright} 2016 Author(s).",

year = "2016",

month = nov,

day = "1",

doi = "10.1063/1.4960535",

language = "English (US)",

volume = "87",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "11",

}

TY - JOUR

T1 - Electron density profile measurements from hydrogen line intensity ratio method in Versatile Experimental Spherical Torus

AU - Kim, Yoosung

AU - Shi, Yue Jiang

AU - Yang, Jeong Hun

AU - Kim, Seongcheol

AU - Kim, Young Gi

AU - Dang, Jeong Jeung

AU - Yang, Seongmoo

AU - Jo, Jungmin

AU - Oh, Soo Ghee

AU - Chung, Kyoung Jae

AU - Hwang, Y. S.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - Electron density profiles of versatile experiment spherical torus plasmas are measured by using a hydrogen line intensity ratio method. A fast-frame visible camera with appropriate bandpass filters is used to detect images of Balmer line intensities. The unique optical system makes it possible to take images of Hα and Hβ radiation simultaneously, with only one camera. The frame rate is 1000 fps and the spatial resolution of the system is about 0.5 cm. One-dimensional local emissivity profiles have been obtained from the toroidal line of sight with viewing dumps. An initial result for the electron density profile is presented and is in reasonable agreement with values measured by a triple Langmuir probe.

AB - Electron density profiles of versatile experiment spherical torus plasmas are measured by using a hydrogen line intensity ratio method. A fast-frame visible camera with appropriate bandpass filters is used to detect images of Balmer line intensities. The unique optical system makes it possible to take images of Hα and Hβ radiation simultaneously, with only one camera. The frame rate is 1000 fps and the spatial resolution of the system is about 0.5 cm. One-dimensional local emissivity profiles have been obtained from the toroidal line of sight with viewing dumps. An initial result for the electron density profile is presented and is in reasonable agreement with values measured by a triple Langmuir probe.

UR - https://www.scopus.com/pages/publications/84985972757

UR - https://www.scopus.com/pages/publications/84985972757#tab=citedBy

U2 - 10.1063/1.4960535

DO - 10.1063/1.4960535

M3 - Article

C2 - 27910347

AN - SCOPUS:84985972757

SN - 0034-6748

VL - 87

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 11

M1 - 11E540

ER -

Electron density profile measurements from hydrogen line intensity ratio method in Versatile Experimental Spherical Torus

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this