Electron density and temperature measurements in TEXTOR ion cyclotron wall conditioning plasmas by thermal Li beam spectroscopy

R. Laengner; B. Unterberg; A. Lyssoivan; M. Paul; V. Philipps; A. Pospieszczyk; U. Samm; O. Schmitz; B. Schweer; G. Sergienko; M. Vervier

doi:10.1016/j.jnucmat.2011.01.133

Electron density and temperature measurements in TEXTOR ion cyclotron wall conditioning plasmas by thermal Li beam spectroscopy

R. Laengner, B. Unterberg, A. Lyssoivan, M. Paul, V. Philipps, A. Pospieszczyk, U. Samm, O. Schmitz, B. Schweer, G. Sergienko, M. Vervier

Laboratory for Plasma Physics

Institut für Energie und Klimaforschung

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

Abstract

In this contribution, we report on the application of Li beam emission spectroscopy to determine electron density and temperature in ion cyclotron wall conditioning plasmas with the help of a collisional-radiative model. Intensity ratios of atomic line emission at 670 nm, 610 nm and 460 nm have been chosen. The overall range of n_e and T_e in ICWC plasmas measured with the Li beam is 10¹⁶ m^-3 to a few 10¹⁷ m^-3 for the electron density and 1.5-15 eV for the electron temperature. With the application of oscillating vertical and horizontal magnetic fields in the range of 0.01 T the plasma extends towards the bottom of the TEXTOR vessel, providing a wider distribution of particle fluxes to the vessel walls.

Original language	English
Pages (from-to)	S1166-S1169
Journal	Journal of Nuclear Materials
Volume	415
Issue number	1 SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2011.01.133
Publication status	Published - 1 Aug 2011

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Laengner, R., Unterberg, B., Lyssoivan, A., Paul, M., Philipps, V., Pospieszczyk, A., Samm, U., Schmitz, O., Schweer, B., Sergienko, G., & Vervier, M. (2011). Electron density and temperature measurements in TEXTOR ion cyclotron wall conditioning plasmas by thermal Li beam spectroscopy. Journal of Nuclear Materials, 415(1 SUPPL), S1166-S1169. https://doi.org/10.1016/j.jnucmat.2011.01.133

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title = "Electron density and temperature measurements in TEXTOR ion cyclotron wall conditioning plasmas by thermal Li beam spectroscopy",

abstract = "In this contribution, we report on the application of Li beam emission spectroscopy to determine electron density and temperature in ion cyclotron wall conditioning plasmas with the help of a collisional-radiative model. Intensity ratios of atomic line emission at 670 nm, 610 nm and 460 nm have been chosen. The overall range of ne and Te in ICWC plasmas measured with the Li beam is 1016 m-3 to a few 1017 m-3 for the electron density and 1.5-15 eV for the electron temperature. With the application of oscillating vertical and horizontal magnetic fields in the range of 0.01 T the plasma extends towards the bottom of the TEXTOR vessel, providing a wider distribution of particle fluxes to the vessel walls.",

author = "R. Laengner and B. Unterberg and A. Lyssoivan and M. Paul and V. Philipps and A. Pospieszczyk and U. Samm and O. Schmitz and B. Schweer and G. Sergienko and M. Vervier",

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doi = "10.1016/j.jnucmat.2011.01.133",

language = "English",

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Laengner, R, Unterberg, B, Lyssoivan, A, Paul, M, Philipps, V, Pospieszczyk, A, Samm, U, Schmitz, O, Schweer, B, Sergienko, G & Vervier, M 2011, 'Electron density and temperature measurements in TEXTOR ion cyclotron wall conditioning plasmas by thermal Li beam spectroscopy', Journal of Nuclear Materials, vol. 415, no. 1 SUPPL, pp. S1166-S1169. https://doi.org/10.1016/j.jnucmat.2011.01.133

TY - JOUR

T1 - Electron density and temperature measurements in TEXTOR ion cyclotron wall conditioning plasmas by thermal Li beam spectroscopy

AU - Laengner, R.

AU - Unterberg, B.

AU - Lyssoivan, A.

AU - Paul, M.

AU - Philipps, V.

AU - Pospieszczyk, A.

AU - Samm, U.

AU - Schmitz, O.

AU - Schweer, B.

AU - Sergienko, G.

AU - Vervier, M.

PY - 2011/8/1

Y1 - 2011/8/1

N2 - In this contribution, we report on the application of Li beam emission spectroscopy to determine electron density and temperature in ion cyclotron wall conditioning plasmas with the help of a collisional-radiative model. Intensity ratios of atomic line emission at 670 nm, 610 nm and 460 nm have been chosen. The overall range of ne and Te in ICWC plasmas measured with the Li beam is 1016 m-3 to a few 1017 m-3 for the electron density and 1.5-15 eV for the electron temperature. With the application of oscillating vertical and horizontal magnetic fields in the range of 0.01 T the plasma extends towards the bottom of the TEXTOR vessel, providing a wider distribution of particle fluxes to the vessel walls.

AB - In this contribution, we report on the application of Li beam emission spectroscopy to determine electron density and temperature in ion cyclotron wall conditioning plasmas with the help of a collisional-radiative model. Intensity ratios of atomic line emission at 670 nm, 610 nm and 460 nm have been chosen. The overall range of ne and Te in ICWC plasmas measured with the Li beam is 1016 m-3 to a few 1017 m-3 for the electron density and 1.5-15 eV for the electron temperature. With the application of oscillating vertical and horizontal magnetic fields in the range of 0.01 T the plasma extends towards the bottom of the TEXTOR vessel, providing a wider distribution of particle fluxes to the vessel walls.

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U2 - 10.1016/j.jnucmat.2011.01.133

DO - 10.1016/j.jnucmat.2011.01.133

M3 - Article

AN - SCOPUS:80054834076

SN - 0022-3115

VL - 415

SP - S1166-S1169

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1 SUPPL

ER -

Electron density and temperature measurements in TEXTOR ion cyclotron wall conditioning plasmas by thermal Li beam spectroscopy

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