E∥B energy-mass spectrograph for measurement of ions and neutral atoms

H. O. Funsten; D. J. McComas; E. E. Scime

doi:10.1063/1.1147824

E∥B energy-mass spectrograph for measurement of ions and neutral atoms

H. O. Funsten
, D. J. McComas
, E. E. Scime

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

2 Scopus citations

Abstract

Real-time measurement of plasma composition and energy is an important diagnostic in fusion experiments. The Thomson parabola spectrograph described here utilizes an electric field parallel to a magnetic field (E∥B) and a two-dimensional imaging detector to uniquely identify the energy-per-charge and mass-per-charge distributions of plasma ions. An ultrathin foil can be inserted in front of the E∥B filter to convert neutral atoms to ions, which are subsequently analyzed using the E∥B filter. Since helium exiting an ultrathin foil does not form a negative ion and hydrogen isotopes do, this spectrograph allows unique identification of tritium ions and neutrals even in the presence of a large background of ³He.

Original language	English (US)
Pages (from-to)	292-295
Number of pages	4
Journal	Review of Scientific Instruments
Volume	68
Issue number	1
DOIs	https://doi.org/10.1063/1.1147824
State	Published - Jan 1997
Externally published	Yes

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.1147824

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title = "E∥B energy-mass spectrograph for measurement of ions and neutral atoms",

abstract = "Real-time measurement of plasma composition and energy is an important diagnostic in fusion experiments. The Thomson parabola spectrograph described here utilizes an electric field parallel to a magnetic field (E∥B) and a two-dimensional imaging detector to uniquely identify the energy-per-charge and mass-per-charge distributions of plasma ions. An ultrathin foil can be inserted in front of the E∥B filter to convert neutral atoms to ions, which are subsequently analyzed using the E∥B filter. Since helium exiting an ultrathin foil does not form a negative ion and hydrogen isotopes do, this spectrograph allows unique identification of tritium ions and neutrals even in the presence of a large background of 3He.",

author = "Funsten, \{H. O.\} and McComas, \{D. J.\} and Scime, \{E. E.\}",

year = "1997",

month = jan,

doi = "10.1063/1.1147824",

language = "English (US)",

volume = "68",

pages = "292--295",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

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T1 - E∥B energy-mass spectrograph for measurement of ions and neutral atoms

AU - Funsten, H. O.

AU - McComas, D. J.

AU - Scime, E. E.

PY - 1997/1

Y1 - 1997/1

N2 - Real-time measurement of plasma composition and energy is an important diagnostic in fusion experiments. The Thomson parabola spectrograph described here utilizes an electric field parallel to a magnetic field (E∥B) and a two-dimensional imaging detector to uniquely identify the energy-per-charge and mass-per-charge distributions of plasma ions. An ultrathin foil can be inserted in front of the E∥B filter to convert neutral atoms to ions, which are subsequently analyzed using the E∥B filter. Since helium exiting an ultrathin foil does not form a negative ion and hydrogen isotopes do, this spectrograph allows unique identification of tritium ions and neutrals even in the presence of a large background of 3He.

AB - Real-time measurement of plasma composition and energy is an important diagnostic in fusion experiments. The Thomson parabola spectrograph described here utilizes an electric field parallel to a magnetic field (E∥B) and a two-dimensional imaging detector to uniquely identify the energy-per-charge and mass-per-charge distributions of plasma ions. An ultrathin foil can be inserted in front of the E∥B filter to convert neutral atoms to ions, which are subsequently analyzed using the E∥B filter. Since helium exiting an ultrathin foil does not form a negative ion and hydrogen isotopes do, this spectrograph allows unique identification of tritium ions and neutrals even in the presence of a large background of 3He.

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UR - https://www.scopus.com/pages/publications/0008743912#tab=citedBy

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DO - 10.1063/1.1147824

M3 - Article

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SN - 0034-6748

VL - 68

SP - 292

EP - 295

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 1

ER -

E∥B energy-mass spectrograph for measurement of ions and neutral atoms

Abstract

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