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Turbulence changes from magnetic fields in a stationary plasma

Published online by Cambridge University Press:  23 December 2010

A. B. ALEXANDER ,
C. T. RAYNOR ,
D. L. WIGGINS ,
M. K. ROBINSON ,
C. C. AKPOVO  and
J. A. JOHNSON III
A. B. ALEXANDER
Affiliation:
Center for Plasma Science and Technology, Florida A&M University, Tallahassee, FL 32310, USA ([email protected])
C. T. RAYNOR
Affiliation:
Center for Plasma Science and Technology, Florida A&M University, Tallahassee, FL 32310, USA ([email protected])
D. L. WIGGINS
Affiliation:
Center for Plasma Science and Technology, Florida A&M University, Tallahassee, FL 32310, USA ([email protected])
M. K. ROBINSON
Affiliation:
Center for Plasma Science and Technology, Florida A&M University, Tallahassee, FL 32310, USA ([email protected])
C. C. AKPOVO
Affiliation:
Center for Plasma Science and Technology, Florida A&M University, Tallahassee, FL 32310, USA ([email protected])
J. A. JOHNSON III
Affiliation:
Center for Plasma Science and Technology, Florida A&M University, Tallahassee, FL 32310, USA ([email protected])
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Abstract

When the krypton plasma in a DC glow discharge tube is exposed to an axial magnetic field, the turbulent energy and the characteristic dominant mode in the turbulent fluctuations are systematically and unexpectedly reduced with increasing magnetic field strength. When the index measuring the rate of transfer of energy through fluctuation scales is monitored, a lambda-like dependence on turbulent energy is routinely observed in all magnetic fields. From this, a critical turbulent energy is identified, which also decreases with increasing magnetic field strength.

Type
Papers
Information
Journal of Plasma Physics , Volume 77 , Issue 4 , August 2011 , pp. 537 - 545
Copyright
Copyright © Cambridge University Press 2010

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