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Spectroscopic Measurement Of The Mhd Dynamo In The Mst Reversed Field Pinch

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Spectroscopic Measurement Of The Mhd Dynamo In The Mst Reversed Field Pinch

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Author : James Tharp Chapman
language : en
Publisher:
Release Date : 1998

Spectroscopic Measurement Of The Mhd Dynamo In The Mst Reversed Field Pinch written by James Tharp Chapman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.

Magnetic Reconnection In Mst Reversed Field Pinch

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Author : Neal Acker Crocker
language : en
Publisher:
Release Date : 2001

Magnetic Reconnection In Mst Reversed Field Pinch written by Neal Acker Crocker and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

Spectroscopic Measurement Of The Mhd Dynamo In The Mst Reversed Field Pinch

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Author :
language : en
Publisher:
Release Date : 1998

Spectroscopic Measurement Of The Mhd Dynamo In The Mst Reversed Field Pinch written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.

The author has directly observed the coupling of ion velocity fluctuations and magnetic field fluctuations to produce an MHD dynamo electric field in the interior of the MST reversed field pinch. Chord averaged ion velocity fluctuations were measured with a fast spectroscopic diagnostic which collects line radiation from intrinsic carbon impurities simultaneously along two lines of sight. The chords employed for the measurements resolved long wavelength velocity fluctuations of several km/s at 8--20 kHz as tiny, fast Doppler shifts in the emitted line profile. During discrete dynamo events the velocity fluctuations, like the magnetic fluctuations, increase dramatically. The toroidal and poloidal chords with impact parameters of 0.3 a and 0.6 a respectively, resolved fluctuation wavenumbers with resonance surfaces near or along the lines of sight indicating a radial velocity fluctuation width for each mode which spans only a fraction of the plasma radius. The phase between the measured toroidal velocity fluctuations and the magnetic fluctuations matches the predictions of resistive MHD while the poloidal velocity fluctuations exhibit a phase consistent with the superposition of MHD effects and the advection of a mean flow gradient past the poloidal line of sight. Radial velocity fluctuations resolved by a chord through the center of the plasma were small compared to the poloidal and toroidal fluctuations and exhibited low coherence with the magnetic fluctuations. The ensembled nonlinear product of the ion velocity fluctuations and fluctuations in the magnetic field indicates a substantial dynamo electric field which peaks during the periods of spontaneous flux generation.

Ion Dynamics And The Dynamo In The Edge Of The Reversed Field Pinch

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Author : Paul W. Fontana
language : en
Publisher:
Release Date : 1999

Ion Dynamics And The Dynamo In The Edge Of The Reversed Field Pinch written by Paul W. Fontana and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.

Measurement Of The Electrical Resistivity Profile In The Madison Symmetric Torus

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Author : Jay K. Anderson
language : en
Publisher:
Release Date : 2001

Measurement Of The Electrical Resistivity Profile In The Madison Symmetric Torus written by Jay K. Anderson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.