Spectroscopic measurements of hydrogen ion temperature during divertor recombination
We explore the possibility of using the neutral H α spectral line profile to measure the ion temperature, T i , in a recombining plasma. Since the H α emissions due to recombination are larger than those due to other mechanisms, interference from nonrecombining regions contributing to the chord inte...
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| Veröffentlicht in: | Review of Scientific Instruments 1999-01, Vol.70 (1), p.347-350 |
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| container_title | Review of Scientific Instruments |
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| creator | Stotler, D. P. Skinner, C. H. Karney, C. F. F. |
| description | We explore the possibility of using the neutral
H
α
spectral line profile to measure the ion temperature,
T
i
,
in a recombining plasma. Since the
H
α
emissions due to recombination are larger than those due to other mechanisms, interference from nonrecombining regions contributing to the chord integrated data is insignificant. A Doppler and Stark broadened
H
α
spectrum is simulated by the DEGAS 2 neutral transport code using assumed plasma conditions. The application of a simple fitting procedure to this spectrum yields an electron density,
n
e
,
and
T
i
consistent with the assumed plasma parameters if the spectrum is dominated by recombination from a region of modest
n
e
variation. General measurements of the ion temperature by
H
α
spectroscopy appear feasible within the context of a model for the entire divertor plasma. |
| doi_str_mv | 10.1063/1.1149431 |
| format | Article |
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H
α
spectral line profile to measure the ion temperature,
T
i
,
in a recombining plasma. Since the
H
α
emissions due to recombination are larger than those due to other mechanisms, interference from nonrecombining regions contributing to the chord integrated data is insignificant. A Doppler and Stark broadened
H
α
spectrum is simulated by the DEGAS 2 neutral transport code using assumed plasma conditions. The application of a simple fitting procedure to this spectrum yields an electron density,
n
e
,
and
T
i
consistent with the assumed plasma parameters if the spectrum is dominated by recombination from a region of modest
n
e
variation. General measurements of the ion temperature by
H
α
spectroscopy appear feasible within the context of a model for the entire divertor plasma.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/1.1149431</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>United States</publisher><subject>70 PLASMA PHYSICS AND FUSION ; DIVERTORS ; DOPPLER EFFECT ; ELECTRON DENSITY ; HYDROGEN ; HYDROGEN IONS ; ION TEMPERATURE ; LINE WIDTHS ; PLASMA DIAGNOSTICS ; RECOMBINATION ; SPECTROSCOPY ; STARK EFFECT ; TEMPERATURE MEASUREMENT ; VISIBLE SPECTRA</subject><ispartof>Review of Scientific Instruments, 1999-01, Vol.70 (1), p.347-350</ispartof><rights>American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c323t-db733271945d1807658e23bcd59346cda34f681baa561469aa2a5407ad4ecfd83</citedby><cites>FETCH-LOGICAL-c323t-db733271945d1807658e23bcd59346cda34f681baa561469aa2a5407ad4ecfd83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/1.1149431$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>309,310,314,780,784,789,790,794,885,1559,4512,23930,23931,25140,27924,27925,76384,76390</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/328542$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Stotler, D. P.</creatorcontrib><creatorcontrib>Skinner, C. H.</creatorcontrib><creatorcontrib>Karney, C. F. F.</creatorcontrib><title>Spectroscopic measurements of hydrogen ion temperature during divertor recombination</title><title>Review of Scientific Instruments</title><description>We explore the possibility of using the neutral
H
α
spectral line profile to measure the ion temperature,
T
i
,
in a recombining plasma. Since the
H
α
emissions due to recombination are larger than those due to other mechanisms, interference from nonrecombining regions contributing to the chord integrated data is insignificant. A Doppler and Stark broadened
H
α
spectrum is simulated by the DEGAS 2 neutral transport code using assumed plasma conditions. The application of a simple fitting procedure to this spectrum yields an electron density,
n
e
,
and
T
i
consistent with the assumed plasma parameters if the spectrum is dominated by recombination from a region of modest
n
e
variation. General measurements of the ion temperature by
H
α
spectroscopy appear feasible within the context of a model for the entire divertor plasma.</description><subject>70 PLASMA PHYSICS AND FUSION</subject><subject>DIVERTORS</subject><subject>DOPPLER EFFECT</subject><subject>ELECTRON DENSITY</subject><subject>HYDROGEN</subject><subject>HYDROGEN IONS</subject><subject>ION TEMPERATURE</subject><subject>LINE WIDTHS</subject><subject>PLASMA DIAGNOSTICS</subject><subject>RECOMBINATION</subject><subject>SPECTROSCOPY</subject><subject>STARK EFFECT</subject><subject>TEMPERATURE MEASUREMENT</subject><subject>VISIBLE SPECTRA</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><recordid>eNqd0M1KAzEUBeAgCtbqwjeIS4WpuZOfmVlKsSoUXFjXIZNk2ogzGZK00Lc3tQX33s3dfBw4B6FbIDMggj7CDIA1jMIZmgCpm6ISJT1HE0IoK0TF6kt0FeMXyccBJmj1MVqdgo_aj07j3qq4Dba3Q4rYd3izN8Gv7YCdH3Cy_WiDShlgsw1uWGPjdjYkH3Cw2vetG1TK8hpddOo72pvTn6LPxfNq_los31_e5k_LQtOSpsK0FaVlBQ3jBmpSCV7bkrba8IYyoY2irBM1tEpxAUw0SpWKM1Ipw6zuTE2n6O6Y62NyMmqXrN5oPwy5kqRlzVmZzf3R6FwyBtvJMbhehb0EIg-TSZCnybJ9ONpD1G-T_-GdD39QjqajP2TAe24</recordid><startdate>199901</startdate><enddate>199901</enddate><creator>Stotler, D. P.</creator><creator>Skinner, C. H.</creator><creator>Karney, C. F. F.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>199901</creationdate><title>Spectroscopic measurements of hydrogen ion temperature during divertor recombination</title><author>Stotler, D. P. ; Skinner, C. H. ; Karney, C. F. F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c323t-db733271945d1807658e23bcd59346cda34f681baa561469aa2a5407ad4ecfd83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>70 PLASMA PHYSICS AND FUSION</topic><topic>DIVERTORS</topic><topic>DOPPLER EFFECT</topic><topic>ELECTRON DENSITY</topic><topic>HYDROGEN</topic><topic>HYDROGEN IONS</topic><topic>ION TEMPERATURE</topic><topic>LINE WIDTHS</topic><topic>PLASMA DIAGNOSTICS</topic><topic>RECOMBINATION</topic><topic>SPECTROSCOPY</topic><topic>STARK EFFECT</topic><topic>TEMPERATURE MEASUREMENT</topic><topic>VISIBLE SPECTRA</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Stotler, D. P.</creatorcontrib><creatorcontrib>Skinner, C. H.</creatorcontrib><creatorcontrib>Karney, C. F. F.</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Review of Scientific Instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Stotler, D. P.</au><au>Skinner, C. H.</au><au>Karney, C. F. F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spectroscopic measurements of hydrogen ion temperature during divertor recombination</atitle><jtitle>Review of Scientific Instruments</jtitle><date>1999-01</date><risdate>1999</risdate><volume>70</volume><issue>1</issue><spage>347</spage><epage>350</epage><pages>347-350</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>We explore the possibility of using the neutral
H
α
spectral line profile to measure the ion temperature,
T
i
,
in a recombining plasma. Since the
H
α
emissions due to recombination are larger than those due to other mechanisms, interference from nonrecombining regions contributing to the chord integrated data is insignificant. A Doppler and Stark broadened
H
α
spectrum is simulated by the DEGAS 2 neutral transport code using assumed plasma conditions. The application of a simple fitting procedure to this spectrum yields an electron density,
n
e
,
and
T
i
consistent with the assumed plasma parameters if the spectrum is dominated by recombination from a region of modest
n
e
variation. General measurements of the ion temperature by
H
α
spectroscopy appear feasible within the context of a model for the entire divertor plasma.</abstract><cop>United States</cop><doi>10.1063/1.1149431</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0034-6748 |
| ispartof | Review of Scientific Instruments, 1999-01, Vol.70 (1), p.347-350 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_crossref_primary_10_1063_1_1149431 |
| source | AIP Journals Complete; AIP Digital Archive |
| subjects | 70 PLASMA PHYSICS AND FUSION DIVERTORS DOPPLER EFFECT ELECTRON DENSITY HYDROGEN HYDROGEN IONS ION TEMPERATURE LINE WIDTHS PLASMA DIAGNOSTICS RECOMBINATION SPECTROSCOPY STARK EFFECT TEMPERATURE MEASUREMENT VISIBLE SPECTRA |
| title | Spectroscopic measurements of hydrogen ion temperature during divertor recombination |
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