Measurements of tritium recycling and isotope exchange in TFTR

C. H. Skinner; J. Kamperschroer; D. Mueller; A. Nagy; D. P. Stotler

doi:10.1016/S0022-3115(96)00626-5

Measurements of tritium recycling and isotope exchange in TFTR

C. H. Skinner, J. Kamperschroer, D. Mueller, A. Nagy, D. P. Stotler

PPPL Engineering

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

13 Scopus citations

Abstract

Tritium Balmer-alpha (T_α) emission, along with H_α and D_α, is observed in the current D-T experimental campaign in TFTR. The data are a measure of the fueling of the plasma by tritium accumulated in the TFTR limiter and the spectral profile maps neutral hydrogenic velocities. T_α is relatively slow to appear in tritium neutral beam heated discharges, (T_α/(H_α+D_α+T_α) = 11% after 8 tritium-only neutral beam discharges). In contrast, the T_α fraction in a sequence of six discharges fueled with tritium puffs, increased to 44%. Larger transient increases (up to 75% T_α) were observed during subsequent tritium gas puffs. Analysis of the Doppler broadened spectral profiles revealed overall agreement with the dissociation, charge exchange, sputtering and reflection velocities predicted by the neutral Monte-Carlo code DEGAS with some deficiency in the treatment of dissociation products in the 10-100 eV range.

Original language	English (US)
Pages (from-to)	887-891
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	241-243
DOIs	https://doi.org/10.1016/S0022-3115(96)00626-5
State	Published - Feb 2 1997
Event	Proceedings of the 1996 12th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices - Saint-Raphael, Fr Duration: May 20 1996 → May 24 1996

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/S0022-3115(96)00626-5

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@article{24048b5b6ca34123b234d8bffe884eee,

title = "Measurements of tritium recycling and isotope exchange in TFTR",

abstract = "Tritium Balmer-alpha (Tα) emission, along with Hα and Dα, is observed in the current D-T experimental campaign in TFTR. The data are a measure of the fueling of the plasma by tritium accumulated in the TFTR limiter and the spectral profile maps neutral hydrogenic velocities. Tα is relatively slow to appear in tritium neutral beam heated discharges, (Tα/(Hα+Dα+Tα) = 11\% after 8 tritium-only neutral beam discharges). In contrast, the Tα fraction in a sequence of six discharges fueled with tritium puffs, increased to 44\%. Larger transient increases (up to 75\% Tα) were observed during subsequent tritium gas puffs. Analysis of the Doppler broadened spectral profiles revealed overall agreement with the dissociation, charge exchange, sputtering and reflection velocities predicted by the neutral Monte-Carlo code DEGAS with some deficiency in the treatment of dissociation products in the 10-100 eV range.",

author = "Skinner, \{C. H.\} and J. Kamperschroer and D. Mueller and A. Nagy and Stotler, \{D. P.\}",

year = "1997",

month = feb,

day = "2",

doi = "10.1016/S0022-3115(96)00626-5",

language = "English (US)",

volume = "241-243",

pages = "887--891",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

note = "Proceedings of the 1996 12th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices ; Conference date: 20-05-1996 Through 24-05-1996",

}

TY - JOUR

T1 - Measurements of tritium recycling and isotope exchange in TFTR

AU - Skinner, C. H.

AU - Kamperschroer, J.

AU - Mueller, D.

AU - Nagy, A.

AU - Stotler, D. P.

PY - 1997/2/2

Y1 - 1997/2/2

N2 - Tritium Balmer-alpha (Tα) emission, along with Hα and Dα, is observed in the current D-T experimental campaign in TFTR. The data are a measure of the fueling of the plasma by tritium accumulated in the TFTR limiter and the spectral profile maps neutral hydrogenic velocities. Tα is relatively slow to appear in tritium neutral beam heated discharges, (Tα/(Hα+Dα+Tα) = 11% after 8 tritium-only neutral beam discharges). In contrast, the Tα fraction in a sequence of six discharges fueled with tritium puffs, increased to 44%. Larger transient increases (up to 75% Tα) were observed during subsequent tritium gas puffs. Analysis of the Doppler broadened spectral profiles revealed overall agreement with the dissociation, charge exchange, sputtering and reflection velocities predicted by the neutral Monte-Carlo code DEGAS with some deficiency in the treatment of dissociation products in the 10-100 eV range.

AB - Tritium Balmer-alpha (Tα) emission, along with Hα and Dα, is observed in the current D-T experimental campaign in TFTR. The data are a measure of the fueling of the plasma by tritium accumulated in the TFTR limiter and the spectral profile maps neutral hydrogenic velocities. Tα is relatively slow to appear in tritium neutral beam heated discharges, (Tα/(Hα+Dα+Tα) = 11% after 8 tritium-only neutral beam discharges). In contrast, the Tα fraction in a sequence of six discharges fueled with tritium puffs, increased to 44%. Larger transient increases (up to 75% Tα) were observed during subsequent tritium gas puffs. Analysis of the Doppler broadened spectral profiles revealed overall agreement with the dissociation, charge exchange, sputtering and reflection velocities predicted by the neutral Monte-Carlo code DEGAS with some deficiency in the treatment of dissociation products in the 10-100 eV range.

UR - https://www.scopus.com/pages/publications/0031546610

UR - https://www.scopus.com/inward/citedby.url?scp=0031546610&partnerID=8YFLogxK

U2 - 10.1016/S0022-3115(96)00626-5

DO - 10.1016/S0022-3115(96)00626-5

M3 - Conference article

AN - SCOPUS:0031546610

SN - 0022-3115

VL - 241-243

SP - 887

EP - 891

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

T2 - Proceedings of the 1996 12th International Conference on Plasma-Surface Interactions in Controlled Fusion Devices

Y2 - 20 May 1996 through 24 May 1996

ER -

Measurements of tritium recycling and isotope exchange in TFTR

Abstract

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