Alpha-tail production with ion-cyclotron-resonance heating of 4He-beam ions in JET plasmas -: art. no. 105002

被引：81

作者：

Mantsinen, MJ ^{[1
]}

Mayoral, ML

Kiptily, VG

Sharapov, SE

Alper, B

Bickley, A

de Baar, M

Eriksson, LG

Gondhalekar, A

Hellsten, T

Lawson, K

Nguyen, F

Noterdaeme, JM

Righi, E

Tuccillo, AA

Zerbini, M

机构：

[1] Aalto Univ, Assoc Euratom Tekes, FIN-02150 Espoo, Finland

[2] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[3] CEA Cadarache, EURATOM Assoc, St Paul Les Durance, France

[4] TEC, EURATOM Assoc FOM, FOM Rijnhuizen, Nieuwegein, Netherlands

[5] Swedish Res Council, Euratom VR Assoc, Stockholm, Sweden

[6] CSU, EFDA JET, Cilham Sci Ctr, Abingdon, Oxon, England

[7] EURATOM, Max Planck IPP, Garching, Germany

[8] EFDA CSU Garching, Garching, Germany

[9] ENEA Fus, EURATOM Assoc, Rome, Italy

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.88.105002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Third-harmonic ion-cyclotron-resonance heating of He-4-beam ions has produced for the first time on the JET tokamak high-energy populations of He-4 ions to simulate 3.5 MeV fusion-born alpha (alpha) particles. Acceleration of He-4 ions to the MeV energy range is confirmed by gamma-ray emission from the nuclear reaction Be-9(alpha, ngamma) C-12 and excitation of Alfven eigenmodes. Concomitant electron heating and sawtooth stabilization are observed. The scheme could be used in next-step tokamaks to gain information on trapped alpha particles and to test a diagnostics in the early nonactivated phase of operation.

引用

页数：4

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