Evaluation of Magnetic Helicity in Homogeneous Turbulence

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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.48.1256

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https://doi.org/10.1103/PhysRevLett.48.1256
 http://hdl.handle.net/11603/30514

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UMBC Goddard Planetary Heliophysics Institute (GPHI)

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https://orcid.org/0000-0002-5317-988X

Date

1982-05-03

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journal articles
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Citation of Original Publication

Matthaeus, William H., Melvyn L. Goldstein, and Charles Smith. “Evaluation of Magnetic Helicity in Homogeneous Turbulence.” Physical Review Letters 48, no. 18 (May 3, 1982): 1256–59. https://doi.org/10.1103/PhysRevLett.48.1256.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

A technique is presented for the measurement of magnetic helicity from values of the two-point magnetic-field correlation matrix under the assumption of spatial homogeneity. Knowledge of a single scalar function of space, derivable from the correlation matrix, suffices to determine the magnetic helicity. The technique is illustrated by a report of the first measurement of the magnetic helicity of the solar wind.