Doppler-shifted cyclotron resonance of fast ions with circularly polarized shear Alfvén waves

Yang Zhang; W. W. Heidbrink; Shu Zhou; H. Boehmer; R. McWilliams; T. A. Carter; S. Vincena; M. K. Lilley

doi:10.1063/1.3103813

Doppler-shifted cyclotron resonance of fast ions with circularly polarized shear Alfvén waves

Yang Zhang
, W. W. Heidbrink
, Shu Zhou
, H. Boehmer
, R. McWilliams
, T. A. Carter
, S. Vincena
, M. K. Lilley

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The Doppler-shifted cyclotron resonance between fast ions and shear Alfv́n waves (SAWs) has been experimentally investigated with a test-particle fast-ion (Li⁺) beam launched in the helium plasma of the Large Plasma Device [Gekelman, Rev. Sci. Instrum. 62, 2875 (1991)]. Left- or right-hand circularly polarized SAWs are launched by an antenna with four current channels. A collimated fast-ion energy analyzer characterizes the resonance by measuring the nonclassical spreading of the averaged beam signal. Left-hand circularly polarized SAWs resonate with the fast ions but right-hand circularly polarized SAWs do not. The measured fast-ion profiles are compared with simulations by a Monte Carlo Lorentz code that uses the measured wave field data.

Original language	English
Article number	055706
Journal	Physics of Plasmas
Volume	16
Issue number	5
DOIs	https://doi.org/10.1063/1.3103813
State	Published - 2009
Externally published	Yes

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title = "Doppler-shifted cyclotron resonance of fast ions with circularly polarized shear Alfv{\'e}n waves",

abstract = "The Doppler-shifted cyclotron resonance between fast ions and shear Alf{\'v}n waves (SAWs) has been experimentally investigated with a test-particle fast-ion (Li+) beam launched in the helium plasma of the Large Plasma Device [Gekelman, Rev. Sci. Instrum. 62, 2875 (1991)]. Left- or right-hand circularly polarized SAWs are launched by an antenna with four current channels. A collimated fast-ion energy analyzer characterizes the resonance by measuring the nonclassical spreading of the averaged beam signal. Left-hand circularly polarized SAWs resonate with the fast ions but right-hand circularly polarized SAWs do not. The measured fast-ion profiles are compared with simulations by a Monte Carlo Lorentz code that uses the measured wave field data.",

author = "Yang Zhang and Heidbrink, \{W. W.\} and Shu Zhou and H. Boehmer and R. McWilliams and Carter, \{T. A.\} and S. Vincena and Lilley, \{M. K.\}",

year = "2009",

doi = "10.1063/1.3103813",

language = "English",

volume = "16",

journal = "Physics of Plasmas",

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publisher = "American Institute of Physics",

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T1 - Doppler-shifted cyclotron resonance of fast ions with circularly polarized shear Alfvén waves

AU - Zhang, Yang

AU - Heidbrink, W. W.

AU - Zhou, Shu

AU - Boehmer, H.

AU - McWilliams, R.

AU - Carter, T. A.

AU - Vincena, S.

AU - Lilley, M. K.

PY - 2009

Y1 - 2009

N2 - The Doppler-shifted cyclotron resonance between fast ions and shear Alfv́n waves (SAWs) has been experimentally investigated with a test-particle fast-ion (Li+) beam launched in the helium plasma of the Large Plasma Device [Gekelman, Rev. Sci. Instrum. 62, 2875 (1991)]. Left- or right-hand circularly polarized SAWs are launched by an antenna with four current channels. A collimated fast-ion energy analyzer characterizes the resonance by measuring the nonclassical spreading of the averaged beam signal. Left-hand circularly polarized SAWs resonate with the fast ions but right-hand circularly polarized SAWs do not. The measured fast-ion profiles are compared with simulations by a Monte Carlo Lorentz code that uses the measured wave field data.

AB - The Doppler-shifted cyclotron resonance between fast ions and shear Alfv́n waves (SAWs) has been experimentally investigated with a test-particle fast-ion (Li+) beam launched in the helium plasma of the Large Plasma Device [Gekelman, Rev. Sci. Instrum. 62, 2875 (1991)]. Left- or right-hand circularly polarized SAWs are launched by an antenna with four current channels. A collimated fast-ion energy analyzer characterizes the resonance by measuring the nonclassical spreading of the averaged beam signal. Left-hand circularly polarized SAWs resonate with the fast ions but right-hand circularly polarized SAWs do not. The measured fast-ion profiles are compared with simulations by a Monte Carlo Lorentz code that uses the measured wave field data.

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U2 - 10.1063/1.3103813

DO - 10.1063/1.3103813

M3 - Article

AN - SCOPUS:66449087075

SN - 1070-664X

VL - 16

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5

M1 - 055706

ER -

Doppler-shifted cyclotron resonance of fast ions with circularly polarized shear Alfvén waves

Abstract

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