Sustainment dynamo reexamined: nonlocal electrical conductivity of plasma in a stochastic magnetic field

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The plasma dynamo is both an intriguing and a practical concept. The intrigue derives from attempting to explain naturally occurring and man-made plasmas whose strong field-aligned currents j/sub parallel/ apparently disobey the most naive Ohm's law j/sub parallel/ = sigma/sub parallel/E/sub parallel/. The practical importance derives from the dynamo's role both in formation and in sustainment of reversed-field pinch (RFP) and Spheromak fusion plasmas. We will examine certain features of the documented quasi-steady discharges on ZT-40M, and RFP in apparent need of a sustainment dynamo. We will show that the tail electrons (which carry j/sub parallel/) are probably wandering (along ... continued below

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Pages: 5

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Jacobson, A.R. & Moses, R.W. January 1, 1984.

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Description

The plasma dynamo is both an intriguing and a practical concept. The intrigue derives from attempting to explain naturally occurring and man-made plasmas whose strong field-aligned currents j/sub parallel/ apparently disobey the most naive Ohm's law j/sub parallel/ = sigma/sub parallel/E/sub parallel/. The practical importance derives from the dynamo's role both in formation and in sustainment of reversed-field pinch (RFP) and Spheromak fusion plasmas. We will examine certain features of the documented quasi-steady discharges on ZT-40M, and RFP in apparent need of a sustainment dynamo. We will show that the tail electrons (which carry j/sub parallel/) are probably wandering (along stochastic B Vector-field lines) over much of the minor radius in one mean-free-path.

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Pages: 5

Notes

NTIS, PC A02/MF A01.

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  • 6. US-Japan symposium on compact toroid research, Princeton, NJ, USA, 20 Feb 1984

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  • Other: DE84007485
  • Report No.: LA-UR-84-524
  • Report No.: CONF-840255-17
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5194216
  • Archival Resource Key: ark:/67531/metadc1059229

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  • January 1, 1984

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  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 2, 2018, 12:17 p.m.

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Jacobson, A.R. & Moses, R.W. Sustainment dynamo reexamined: nonlocal electrical conductivity of plasma in a stochastic magnetic field, article, January 1, 1984; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1059229/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.