High resolution charge-exchange spectroscopic measurements of aluminum impurity ions in a high temperature plasma

S.T.A. Kumar; D. J. Den Hartog; B. E. Chapman; Martin O'Mullane; M. Nornberg; D. Craig; S. Eilerman; G. Fiksel; E. Parke; J. Reusch

doi:10.1088/0741-3335/54/1/012002

High resolution charge-exchange spectroscopic measurements of aluminum impurity ions in a high temperature plasma

S.T.A. Kumar, D. J. Den Hartog, B. E. Chapman, Martin O'Mullane, M. Nornberg, D. Craig, S. Eilerman, G. Fiksel, E. Parke, J. Reusch

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

14 Citations (Scopus)

60 Downloads (Pure)

Abstract

Charge-exchange recombination spectroscopy, which is generally used to measure low-Z impurities in fusion devices, has been used for measuring Al+11 and Al+13 impurities in the Madison Symmetric Torus reversed field pinch. To obtain the impurity ion temperature, the experimental emission spectrum is fitted with a model which includes fine structure in the atomic transition. Densities of these two ionization states, calculated from charge-exchange emission brightness, are used in combination with a collisional radiative model to estimate the abundance of all other charge states of aluminum in the plasma and the contribution of aluminum to the effective ionic charge of the plasma.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	Plasma Physics and Controlled Fusion
Volume	54
Issue number	1
DOIs	https://doi.org/10.1088/0741-3335/54/1/012002
Publication status	Published - Jan 2012
Event	Symposium on Celebrating Professor Robert Dewars Accomplishments in Plasma Physics - Atlanta, United States Duration: 31 Oct 2009 → …

Keywords

torus
transport
recombination spectroscopy
ionization
tokamak
electrons
reversed-field pinch
high resolution
charge-exchange
spectroscopic measurements
aluminium impurity
ions
high temperature
plasma

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10.1088/0741-3335/54/1/012002

0741 3335 54 1 012002Final published version, 104 KB

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title = "High resolution charge-exchange spectroscopic measurements of aluminum impurity ions in a high temperature plasma",

abstract = "Charge-exchange recombination spectroscopy, which is generally used to measure low-Z impurities in fusion devices, has been used for measuring Al+11 and Al+13 impurities in the Madison Symmetric Torus reversed field pinch. To obtain the impurity ion temperature, the experimental emission spectrum is fitted with a model which includes fine structure in the atomic transition. Densities of these two ionization states, calculated from charge-exchange emission brightness, are used in combination with a collisional radiative model to estimate the abundance of all other charge states of aluminum in the plasma and the contribution of aluminum to the effective ionic charge of the plasma. ",

keywords = "torus, transport, recombination spectroscopy, ionization, tokamak, electrons, reversed-field pinch, high resolution , charge-exchange, spectroscopic measurements, aluminium impurity, ions, high temperature, plasma",

author = "S.T.A. Kumar and {Den Hartog}, {D. J.} and Chapman, {B. E.} and Martin O'Mullane and M. Nornberg and D. Craig and S. Eilerman and G. Fiksel and E. Parke and J. Reusch",

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High resolution charge-exchange spectroscopic measurements of aluminum impurity ions in a high temperature plasma. / Kumar, S.T.A.; Den Hartog, D. J.; Chapman, B. E.; O'Mullane, Martin; Nornberg, M.; Craig, D.; Eilerman, S.; Fiksel, G.; Parke, E.; Reusch, J.

In: Plasma Physics and Controlled Fusion, Vol. 54, No. 1, 01.2012, p. 1-4.

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

TY - JOUR

T1 - High resolution charge-exchange spectroscopic measurements of aluminum impurity ions in a high temperature plasma

AU - Kumar, S.T.A.

AU - Den Hartog, D. J.

AU - Chapman, B. E.

AU - O'Mullane, Martin

AU - Nornberg, M.

AU - Craig, D.

AU - Eilerman, S.

AU - Fiksel, G.

AU - Parke, E.

AU - Reusch, J.

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N2 - Charge-exchange recombination spectroscopy, which is generally used to measure low-Z impurities in fusion devices, has been used for measuring Al+11 and Al+13 impurities in the Madison Symmetric Torus reversed field pinch. To obtain the impurity ion temperature, the experimental emission spectrum is fitted with a model which includes fine structure in the atomic transition. Densities of these two ionization states, calculated from charge-exchange emission brightness, are used in combination with a collisional radiative model to estimate the abundance of all other charge states of aluminum in the plasma and the contribution of aluminum to the effective ionic charge of the plasma.

AB - Charge-exchange recombination spectroscopy, which is generally used to measure low-Z impurities in fusion devices, has been used for measuring Al+11 and Al+13 impurities in the Madison Symmetric Torus reversed field pinch. To obtain the impurity ion temperature, the experimental emission spectrum is fitted with a model which includes fine structure in the atomic transition. Densities of these two ionization states, calculated from charge-exchange emission brightness, are used in combination with a collisional radiative model to estimate the abundance of all other charge states of aluminum in the plasma and the contribution of aluminum to the effective ionic charge of the plasma.

KW - torus

KW - transport

KW - recombination spectroscopy

KW - ionization

KW - tokamak

KW - electrons

KW - reversed-field pinch

KW - high resolution

KW - charge-exchange

KW - spectroscopic measurements

KW - aluminium impurity

KW - ions

KW - high temperature

KW - plasma

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DO - 10.1088/0741-3335/54/1/012002

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VL - 54

SP - 1

EP - 4

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 1

T2 - Symposium on Celebrating Professor Robert Dewars Accomplishments in Plasma Physics

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