155:
368:", lines of sight along which the measurements are taken. These chords pass through regions both with and without the neutral beam. By subtracting the signals from these two chords, emissions not generated by the neutral beam can be inferred. This allows for the determination of ion properties, such as its temperature and density.
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tend to become fully ionized during operation, which makes it challenging to diagnose their properties using conventional optical diagnostics. To address this, a method was developed in the 1970s which involves the injection of a beam of neutral atoms, such as hydrogen or deuterium, into the plasma.
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This process results in the ionization of hydrogenic atoms the excitation of ions through charge exchange, as represented by the reaction:
17:
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Charge-exchange spectroscopy is often referred to as charge-exchange recombination spectroscopy, which is acronymized as CXRS or CER.
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Chrystal, C.; Burrell, K. H.; Grierson, B. A.; Haskey, S. R.; Groebner, R. J.; Kaplan, D. H.; Briesemeister, A. (2016).
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The technique can also be extended to include multiple chords to build spatial profiles of the plasma, such as its
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46:, resulting in the neutral atom acquiring the charge of the ion. The reaction is typically expressed as
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Charge-exchange spectroscopy (abbreviated CES or CXS) is a technique commonly used in
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557:"Charge exchange recombination spectroscopy as a plasma diagnostic tool (invited)"
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overlap in the course of the collision. This can be used in various applications.
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rotation. This provides insights into how ions conduct heat and transport
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represents the various possible charged states of the ions in the plasma.
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604:"Improved edge charge exchange recombination spectroscopy in DIII-D"
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502:"An overview of charge-exchange spectroscopy as a plasma diagnostic"
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This reaction has various diagnostic applications, such as in
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Optical fibers are then strategically positioned to create "
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35:
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International
Journal of Mass Spectrometry and Ion Physics
318:{\displaystyle {\ce {{H^{0}}+A^{+q}->{H+}+^{\star }}}}
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43:
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55:
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452:"High pressure charge exchange mass spectrometry"
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96:{\displaystyle {\ce {A+ + B -> A + B+}}}
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14:
717:Atomic, molecular, and optical physics
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450:Einolf, Noel; Munson, Burnaby (1972).
722:Applied and interdisciplinary physics
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506:Plasma Physics and Controlled Fusion
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24:
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34:) is a process in which a neutral
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167:some explanation on cross section
608:Review of Scientific Instruments
561:Review of Scientific Instruments
207:plasmas. In fusion plasmas, the
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671:"The theory of charge exchange"
413:"The theory of charge exchange"
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675:Reports on Progress in Physics
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417:Reports on Progress in Physics
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354:{\displaystyle {\ce {A^{+q}}}}
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143:from the neutral atom as both
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1:
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476:10.1016/0020-7381(72)80040-8
203:to analyze high-temperature
195:Charge-exchange spectroscopy
18:Charge-exchange spectroscopy
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10:
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687:10.1088/0034-4885/35/3/301
555:Fonck, Raymond J. (1985).
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429:10.1088/0034-4885/35/3/301
139:, the ion can acquire an
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32:charge exchange collision
669:Bransden, B H (1972).
411:Bransden, B H (1972).
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373:toroidal and poloidal
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53:
620:2016RScI...87kE512C
573:1985RScI...56..885F
518:1994PPCF...36..171I
500:Isler, R C (1994).
468:1972IJMSI...9..141E
379:within the plasma.
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201:plasma diagnostics
169:. You can help by
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628:10.1063/1.4958915
581:10.1063/1.1138033
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205:controlled fusion
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127:collides with an
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663:Further reading
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614:(11): 11E512.
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567:(5): 885–890.
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512:(2): 171–208.
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462:(2): 141–160.
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190:Applications
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171:adding to it
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165: with:
706:Categories
398:References
695:250908886
636:0034-6748
589:0034-6748
542:250907453
534:0741-3335
484:0020-7381
437:250908886
310:⋆
291:−
252:⟶
74:⟶
652:27910369
386:See also
377:momentum
141:electron
40:molecule
644:1350535
616:Bibcode
569:Bibcode
514:Bibcode
464:Bibcode
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366:chords
329:where
137:plasma
119:Theory
691:S2CID
538:S2CID
433:S2CID
135:or a
131:in a
648:PMID
640:OSTI
632:ISSN
585:ISSN
530:ISSN
480:ISSN
125:atom
111:and
36:atom
30:(or
683:doi
624:doi
577:doi
522:doi
472:doi
425:doi
173:.
133:gas
129:ion
44:ion
38:or
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