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介绍了针对中国联合球形托卡马克氦放电等离子体建立的碰撞辐射(CR)模型. 给出CR模型计算的来自主量子数n=4激发态能级的三条谱线的强度比447.1 nm(23P–43S)/492.2 nm(21P–41D)和492.2 nm/504.8 nm(21P–41S)在电子温度Te和电子密度Ne空间内的计算结果. 建立了根据谱线强度比确定Te与Ne的谱线比法. 将该方法应用在氦放电等离子体诊断上,通过与微波干涉仪测量结果的对比以及CR模型与实验测量的激发态数密度的对比验证了方法的有效性. 分析了引起诊断结果误差的因素,包括实验测量设备误差、CR模型使用的速率系数不确定度与能级选取,以及光谱测量的弦积分特性等.
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关键词:
- 发射光谱 /
- 碰撞辐射模型 /
- 谱线比法 /
- 中国联合球形托卡马克
The collisional-radiative model, that has been constructed for the helium plasma in the Sino-United Spherical Tokamak is introduced. The result of the 447.1nm (23P-43S)/492.2nm(21P-41D) and 492.2nm/504.8nm(21P-41S) line ratios is given. The line ratio method that is used for measuring electron temperature Te and density Ne parameters is described. The result from the line ratio method is consistent with the measurement of the 94 GHz interferometer. The method is also validated by comparing the relative population densities of the excited states which are deduced from the CR model and the measured intensity data of helium lines. The factors that brings errors into the diagnostic result are discussed, including the error from the measurements, and those from the uncertainties of the rate coefficients that are used in the CR model and the viewing chord integration characteristic of the optical emission measurement.-
Keywords:
- optical emission spectroscopy /
- collisional-radiative model /
- line ratio method /
- sino-united spherical tokamak
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[2] Niu T Y, Cao J X, Liu L, Liu J Y, Wang Y, Wang L, L Y, Wang K, Zhu Y 2007 Acta Phys. Sin. 56 2330 (in Chinese) [牛田野, 曹金祥, 刘磊, 刘金英, 王艳, 王亮, 吕铀, 王珂, 朱颖 2007 物理学报 56 2330]
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[6] O'Mullane M G, Anderson H, Andrew Y, Brix M, Giroud C, Meigs A G, Proschek M, Summers H P, Zastrow K D, contributors to the FEDA-JET workprogramme 2002 Advanced Diagnostics for Magnetic and Inertial Fusion (Varenna: Springer) p67
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[13] Fujimoto T 1979 J. Quant. Spectrosc. Radiat. Transfer 21 439
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[15] Tang J W, Huang D Z, Yi Y B 2010 Acta Phys. Sin. 59 7769 (in Chinese) [唐京武, 黄笃之, 易有报 2010 物理学报 59 7769]
[16] He Y X 2002 Plasma Sci. Technol. 4 1355
[17] Wang W H, He Y X, Gao Z, Zeng L, Zhang G P, Xie L F, Yang X Z, Feng C H, Wang L, Xiao Q, Li X Y 2005 Plasma Phys. Control. Fusion 47 1
[18] Ralchenko Y, Janev R K, Kato T, Fursa D V, Bray I, de Heer F J 2008 At. Data Nucl. Data Tables 94 603
[19] Verner D A, Ferland G J 1996 arXiv:astro-ph/9509083 [astro-ph]
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[21] Shull J M, Van Steenberg M 1982 Ap. J. Suppl. Ser. 48 95
[22] Arnaud M, Rothenflug R 1985 Astron. Astrophys. Suppl. Ser. 60 425
[23] Summers H P, Dickson W J, O'Mullane M G, Badnell N R, Whiteford A D, Brooks D H, Lang J, Loch S D, Griffin D C 2006 Plasma Phys. Control. Fusion 48 263
[24] Chung H K, Chen M H, Morgan W L, Ralchenko Y, Lee R W 2005 High Energy Denisty Phys. 1 3
[25] Boivin R F, Loch S D, Ballance C P, Branscomb D, Pindzola M S 2007 Plasma Sources Sci. Technol. 16 470
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[27] Fujimoto T, Sawada K, Takahata K, Eriguchi K, Suemitsu H, Ishii K, Okasaka R, Tanaka H, Maekawa T, Terumichi Y, Tanaka S 1989 Nucl. Fusion 29 1519
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[1] Boivin R F, Kline J L, Scime E E 2001 Phys. Plasmas 8 5303
[2] Niu T Y, Cao J X, Liu L, Liu J Y, Wang Y, Wang L, L Y, Wang K, Zhu Y 2007 Acta Phys. Sin. 56 2330 (in Chinese) [牛田野, 曹金祥, 刘磊, 刘金英, 王艳, 王亮, 吕铀, 王珂, 朱颖 2007 物理学报 56 2330]
[3] Yu Y Q, Xin Y, Ning Z Y 2011 Chin. Phys. B 20 015207
[4] Zhong W L, Duan X R, Yu D L, Han X Y, Yang L M 2010 Acta Phys. Sin. 59 3336 (in Chinese) [钟武律, 段旭如, 余德良, 韩晓玉, 杨立梅 2010 物理学报 59 3336]
[5] Pu Y D, Zhang J Y, Yang J M, Huang T X, Ding Y K 2011 Chin. Phys. B 20 015202
[6] O'Mullane M G, Anderson H, Andrew Y, Brix M, Giroud C, Meigs A G, Proschek M, Summers H P, Zastrow K D, contributors to the FEDA-JET workprogramme 2002 Advanced Diagnostics for Magnetic and Inertial Fusion (Varenna: Springer) p67
[7] Goto M 2003 J. Quant. Spectrosc. Radiat. Transfer 76 331
[8] Schweer B, Mank G, Pospieszczyk A, Brosda B, Pohlmeyer B 1992 J. Nucl. Mater. 196-198 174
[9] Schmitz O, Beigman I L, Vainshtein L A, Schweer B, Kantor M, Pospieszczyk A, Xu Y, Krychowiak M, Lehnen M, Samm U, Unterberg B, the TEXTOR team 2008 Plasma Phys. Control. Fusion 50 115004
[10] Field A R, Carolan P G, Conway N J, O'Mullane M G 1999 Rev. Sci. Instrum. 70 355
[11] Hidalgo A, Tafalla D, Brañas B, Tabarés F L 2004 Rev. Sci. Instrum. 75 3478
[12] Ahn J W, Craig D, Fiksel G, Den Hartog D J, Anderson J K, O'Mullane M G 2007 Phys. Plasmas 14 083301
[13] Fujimoto T 1979 J. Quant. Spectrosc. Radiat. Transfer 21 439
[14] Li J, Xie W P, Huang X B, Yang L B, Cai H C, Pu Y K 2010 Acta Phys. Sin. 59 7922 (in Chinese) [李晶, 谢卫平, 黄显宾, 杨礼兵, 蔡红春, 蒲以康 2010 物理学报 59 7922]
[15] Tang J W, Huang D Z, Yi Y B 2010 Acta Phys. Sin. 59 7769 (in Chinese) [唐京武, 黄笃之, 易有报 2010 物理学报 59 7769]
[16] He Y X 2002 Plasma Sci. Technol. 4 1355
[17] Wang W H, He Y X, Gao Z, Zeng L, Zhang G P, Xie L F, Yang X Z, Feng C H, Wang L, Xiao Q, Li X Y 2005 Plasma Phys. Control. Fusion 47 1
[18] Ralchenko Y, Janev R K, Kato T, Fursa D V, Bray I, de Heer F J 2008 At. Data Nucl. Data Tables 94 603
[19] Verner D A, Ferland G J 1996 arXiv:astro-ph/9509083 [astro-ph]
[20] Aldrovandi S M V, Péquignot D 1973 Astron. Astrophys. 25 137
[21] Shull J M, Van Steenberg M 1982 Ap. J. Suppl. Ser. 48 95
[22] Arnaud M, Rothenflug R 1985 Astron. Astrophys. Suppl. Ser. 60 425
[23] Summers H P, Dickson W J, O'Mullane M G, Badnell N R, Whiteford A D, Brooks D H, Lang J, Loch S D, Griffin D C 2006 Plasma Phys. Control. Fusion 48 263
[24] Chung H K, Chen M H, Morgan W L, Ralchenko Y, Lee R W 2005 High Energy Denisty Phys. 1 3
[25] Boivin R F, Loch S D, Ballance C P, Branscomb D, Pindzola M S 2007 Plasma Sources Sci. Technol. 16 470
[26] Burgos J M M, Schmitz O, Loch S D, Ballance C P 2012 Phys. Plasmas 19 012501
[27] Fujimoto T, Sawada K, Takahata K, Eriguchi K, Suemitsu H, Ishii K, Okasaka R, Tanaka H, Maekawa T, Terumichi Y, Tanaka S 1989 Nucl. Fusion 29 1519
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