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

G. Fiksel; B. Hudson; D. J. Den Hartog; R. M. Magee; R. O'Connell; S. C. Prager; A. D. Beklemishev; V. I. Davydenko; A. A. Ivanov; Yu A. Tsidulko

doi:10.1103/PhysRevLett.95.125001

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

G. Fiksel, B. Hudson, D. J. Den Hartog, R. M. Magee, R. O'Connell, S. C. Prager, A. D. Beklemishev, V. I. Davydenko, A. A. Ivanov, Yu A. Tsidulko

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38 Scopus citations

Abstract

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.

Original language	English (US)
Article number	125001
Journal	Physical review letters
Volume	95
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.95.125001
State	Published - Sep 16 2005

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.95.125001

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abstract = "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.",

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AU - Fiksel, G.

AU - Hudson, B.

AU - Den Hartog, D. J.

AU - Magee, R. M.

AU - O'Connell, R.

AU - Prager, S. C.

AU - Beklemishev, A. D.

AU - Davydenko, V. I.

AU - Ivanov, A. A.

AU - Tsidulko, Yu A.

PY - 2005/9/16

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AB - 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.

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

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