Determination of isotope ratio in the divertor of JET-ILW by high-resolution H alpha spectroscopy: H-D experiment and implications for D-T experiment | |
Neverov, V. S.45,46; Kukushkin, A. B.45; Kruezi, U.45,49; Stamp, M. F.45,49; Weisen, H.45,49; Joffrin, E.57; Abduallev, S.84; Abhangi, M.8; Abreu, P.15; Afzal, M.64 | |
刊名 | NUCLEAR FUSION |
2019-04-01 | |
卷号 | 59期号:4页码:18 |
关键词 | tokamak diagnostics spectral line shapes inverse problems isotope ratio |
ISSN号 | 0029-5515 |
DOI | 10.1088/1741-4326/ab0000 |
英文摘要 | The data of the H alpha high-resolution spectroscopy, collected on the multiple lines of sight, which cover the entire divertor space in poloidal cross-section, during the recent hydrogen-deuterium experiments in JET-ILW (ITER-like wall), are processed. A strong spatial inhomogeneity of the hydrogen concentration, H/(H + D), in divertor is found in many pulses. Namely, the H/(H + D) ratio may be lower in the inner divertor than that in the outer divertor by the values of 0.15-0.35, depending on the conditions of gas puffing and plasma heating. This effect suggests the necessity of spatially-resolved measurements of isotope ratio in the divertor in the upcoming deuterium-tritium experiments. Also, separation of the overlapped T alpha and D alpha spectral lines is shown to be a challenging task especially when the local Doppler-broadened (Gaussian) line shapes are noticeably distorted by the net inward flux of fast non-Maxwellian neutral atoms. We use the respective, formerly developed model of an asymmetric spectral line shape, while analysing the data of the first deuterium-tritium experiment in JET-C (carbon wall), and test the model via comparing the isotope ratio results with another diagnostic's measurements. This model is shown to increase the accuracy of tritium concentration measurements in the divertor. |
资助项目 | RF State Corporation Rosatom ; Euratom ; Euratom research and training programme 2014-2018[633053] ; Euratom research and training programme 2019-2020[633053] |
WOS关键词 | LINE-SHAPE ; RETENTION ; PLASMAS ; PERFORMANCE ; TILES |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000458371300001 |
资助机构 | RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; RF State Corporation Rosatom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom ; Euratom research and training programme 2014-2018 ; Euratom research and training programme 2014-2018 ; Euratom research and training programme 2014-2018 ; Euratom research and training programme 2014-2018 ; Euratom research and training programme 2014-2018 ; Euratom research and training programme 2014-2018 ; Euratom research and training programme 2014-2018 ; 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内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/41760] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Neverov, V. S. |
作者单位 | 1.Univ Trento, Dipartimento Ingn Ind, Trento, Italy 2.Dublin City Univ, Dublin, Ireland 3.Lviv Polytech Natl Univ, Magnet Sensor Lab, Lvov, Ukraine 4.KTH, EES, Fus Plasma Phys, SE-10044 Stockholm, Sweden 5.Gen Atom, POB 85608, San Diego, CA 92186 USA 6.HRS Fus, W Orange, NJ USA 7.IFP CNR, Via R Cozzi 53, I-20125 Milan, Italy 8.Inst Plasma Res, Gandhinagar 382428, Gujarat State, India 9.Inst Nucl Phys, Radzikowskiego 152, PL-31342 Krakow, Poland 10.Opole Univ, Inst Phys, Oleska 48, PL-45052 Opole, Poland |
推荐引用方式 GB/T 7714 | Neverov, V. S.,Kukushkin, A. B.,Kruezi, U.,et al. Determination of isotope ratio in the divertor of JET-ILW by high-resolution H alpha spectroscopy: H-D experiment and implications for D-T experiment[J]. NUCLEAR FUSION,2019,59(4):18. |
APA | Neverov, V. S..,Kukushkin, A. B..,Kruezi, U..,Stamp, M. F..,Weisen, H..,...&Sharapov, S. E..(2019).Determination of isotope ratio in the divertor of JET-ILW by high-resolution H alpha spectroscopy: H-D experiment and implications for D-T experiment.NUCLEAR FUSION,59(4),18. |
MLA | Neverov, V. S.,et al."Determination of isotope ratio in the divertor of JET-ILW by high-resolution H alpha spectroscopy: H-D experiment and implications for D-T experiment".NUCLEAR FUSION 59.4(2019):18. |
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