Tritium fast ion distribution in JET current hole plasmas

被引：16

作者：

Hawkes, NC ^{[1
]}

Yavorskij, VA

Adams, JM

Baranov, YF

Bertalot, L

Challis, CD

Conroy, S

Goloborod'ko, V

Kiptily, V

Popovichev, S

Schoepf, K

Sharapov, SE

Stork, D

Surrey, E

机构：

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

[2] Univ Innsbruck, Inst Theoret Phys, EURATOM Assoc, OEAW, A-6020 Innsbruck, Austria

[3] Ukrainian Acad Sci, Inst Nucl Res, UA-252028 Kiev, Ukraine

[4] EURATOM, ENEA, CNR Fus, Frascati, Rome, Italy

[5] Uppsala Univ, Dept Neutron Res, EURATOM, VR Assoc, Uppsala, Sweden

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2005年 / 47卷 / 09期

关键词：

D O I：

10.1088/0741-3335/47/9/008

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Current hole plasmas in JET are those in which the current density within r/a < 0.3 is close to zero. Tritium ions injected quasi-tangentially into such plasmas can fulfil a stagnation condition whereby their vertical drift is cancelled by the poloidal component of their parallel velocity. These ions remain trapped at approximately 0.2 m from the plasma axis and can be detected by a distortion in the neutron emission profile. Numerical modelling of the steady-state distribution reproduces the experimental results while the decay of neutron emission after the cessation of injection is found to be sensitive to small changes in the q-profile.

引用

页码：1475 / 1493

页数：19

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