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

Research output: Contribution to journalArticle

33 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 languageEnglish (US)
Article number125001
JournalPhysical review letters
Volume95
Issue number12
DOIs
StatePublished - Sep 16 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Observation of weak impact of a stochastic magnetic field on fast-ion confinement'. Together they form a unique fingerprint.

  • Cite this

    Fiksel, G., Hudson, B., Den Hartog, D. J., Magee, R. M., O'Connell, R., Prager, S. C., Beklemishev, A. D., Davydenko, V. I., Ivanov, A. A., & Tsidulko, Y. A. (2005). Observation of weak impact of a stochastic magnetic field on fast-ion confinement. Physical review letters, 95(12), [125001]. https://doi.org/10.1103/PhysRevLett.95.125001