| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Beam Ion Transport from Neutron Emissivity Measurement in Deuterium Neutral Beam-Heated Deuterium Plasmas of the HL-2A Tokamak |
| ISOBE Mitsutaka1, LIU Yi2, YANG Jin-Wei2, CHEN Wei2, JI Xiao-Quan2, YUAN Guo-Liang2, ZHANG Yi-Po2, ZOU Gui-Qing2, LI Wei2, LEI Guang-Jiu2, DING Xuan-Tong2, YAN Long-Wen2, YANG Qing-Wei2, DUAN Xu-Ru2, OHDACHI Satoshi1, MORITA Shigeru1, TOI Kazuo1 |
| 1National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292 Japan2Southwestern Institute of Physics, PO Box 432, Chengdu 610041 |
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| Cite this article: |
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ISOBE Mitsutaka, LIU Yi, YANG Jin-Wei et al 2009 Chin. Phys. Lett. 26 105201 |
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Abstract An experiment at the HL-2A tokamak with a high-energy deuterium neutral beam (NB) injection (30keV, about 0.6MW) was performed. The emission of d-d fusion neutrons dominated by beam-plasmas reactions when the deuterium NB was injected into the deuterium target plasma was observed by means of a 235U fission chamber. To obtain information on NB deposition and the slowing down of beam ions in HL-2A plasmas, a very short-pulse deuterium NB injection, or the so-called ``blip'' injection, was performed into MHD-quiescent Ohmic deuterium plasmas. Analysis of neutron decay following the NB ``blip'' injection indicates that tangentially injected beam ions are well confined, slowing down classically in the HL-2A. In contrast to the MHD-quiescent plasma, anomalous losses of beam ions were observed when tearing mode instabilities were present.
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| Keywords:
52.20.Dq
52.55.Pi
52.50.Gj
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Received: 11 May 2009
Published: 27 September 2009
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| PACS: |
52.20.Dq
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(Particle orbits)
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52.55.Pi
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(Fusion products effects (e.g., alpha-particles, etc.), fast particle effects)
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52.50.Gj
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(Plasma heating by particle beams)
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[1] Kurki-Suonio T, Asunta O, Hyn\"{onen V, Johnson T et al2008 22$^{nd$ IAEA Fusion Energy Conference (Geneva 13--18October 2008) IT/P6-2
[2] Kramer G J, White R B, Nazikian R and Berk H L 2008 22$^{nd$ IAEA Fusion Energy Conference (Geneva 13--18 October2008) IT/P6-3
[3] Heidbrink W W and Sadler G J 1994 Nuclear Fusion 34 535
[4] Fasoli A, Gormenzano C, Berk H L, Breizman B, Briguglio S,Darrow D S et al 2007 Nuclear Fusion 47 S264
[5] Jarvis O N 1994 Plasma Phys. Control. Fusion 36 209
[6] Strachan J, Colestock P L, Davis S L, Eames D, Efthimion PC, Eubank H P et al 1981 Nuclear Fusion 21 67
[7] Heidbrink W W, Kim J and Groebner R J 1988 Nucl.Fusion 28 1897
[8] Heidbrink W W, Barnes C W, Hammett G W, Kusama Y, Scott SD, Zarnstorff M C et al 1991 Phys. Fluids B 3 3167
[9] Tobita K, Tani K, Nishitani T, Nagashima K and Kusama Y1994 Nucl. Fusion 34 1097
[10] Isobe M, Sasao M, Okamura S, Osakabe M, Kubo S, Minami Tet al 1998 J. Plasma Fusion Res. 1 366
[11] Liu D, Zhou C, Cao Z, Yan J, Liu Y and the HL-2A team2003 Fusion Eng. Des. 66--68 147
[12] Yang J W, Song X Y, Zhang W, Li X, Lee W H et al 2005 Plasma Sci. Technol. 7 2860
[13] Mikkelsen D R 1989 Nucl. Fusion 29 1113
[14] Konovalov S V and Putvinskii S V 1988 Sov. J. PlasmaPhys. 14 461
[15] Bittoni E and Haegi M 1992 Fusion Technol. 22461
[16] Mynick H E 1993 Phys. Fluids B5 1471
[17] Carolipio E M, Heidbrink W W, Forest C B and White R B2002 Nucl. Fusion 42 853
[18] Garc\'{\ia-Mu\~{noz M, Martin P, Fahrbach H U, GobbinM, G\"{unter S et al 2007 Nucl. Fusion 47 L10
[19] Ji X Q, Yang Q W, Deng W, Zhou J, Fend B B, Yuan B S etal 2008 35$^{th$ EPS Conference on Plasma Phys. Hersonissos(ECA 9--13 June 2008) vol 32 p 5.101 |
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