Observation of weak impact of a stochastic magnetic field on fast-ion confinement

被引：32

作者：

Fiksel, G

Hudson, B

Den Hartog, DJ

Magee, RM

O'Connell, R

Prager, SC

Beklemishev, AD

Davydenko, VI

Ivanov, AA

Tsidulko, YA

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[2] Ctr Magnet Self Org Lab & Astrophys Plasmas, Madison, WI 53706 USA

[3] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.95.125001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fast ions are observed to be very well confined in the Madison Symmetric Torus reversed field pinch despite the presence of stochastic magnetic field. The fast-ion energy loss is consistent with the classical slowing down rate, and their confinement time is longer than expected by stochastic estimates. Fast-ion confinement is measured from the decay of d-d neutrons following a short pulse of a 20 keV atomic deuterium beam. Ion confinement agrees with computation of particle trajectories in the stochastic magnetic field, and is understood through consideration of ion guiding center islands.

引用

页数：4

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