MHD instabilities developing in a conductor exploding in the skin effect mode

MHD instabilities developing in a conductor exploding in the skin effect mode

Bibliographic Details
Parent link:Physics of Plasmas
Vol. 23, iss. 12.— 2016.— [122107, 9 р.]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Институт неразрушающего контроля (ИНК) Кафедра физических методов и приборов контроля качества (ФМПК)
Other Authors: Oreshkin V. I. Vladimir Ivanovich, Chaykovskiy S. A., Datsko I. M. Igor Mikhaylovich, Labetskaya N. A. Nataljya Anatoljevna, Mesyats G. A. Gennady Andreevich, Oreshkin E. V. Evgeny Vladimirovich, Rakhatin N. A., Rybka D. V. Dmitry Vladimirovich
Summary:Title screen
The results of experiments with exploding copper conductors, performed on the MIG facility (providing currents of amplitude of about 2.5 MA and rise time of 100 ns), are analyzed. With an frame optical camera, large-scale instabilities of wavelength 0.2-0.5 mm were detected on the conductor surface. The instabilities show up as plasma “tongues” expanding with a sound velocity in the opposite direction to the magnetic field gradient. Analysis performed using a two-dimensional MHD code has shown that the structures observed in the experiments were formed most probably due to flute instabilities. The growth of flute instabilities is predetermined by the development of thermal instabilities near the conductor surface. The thermal instabilities arise behind the front of the nonlinear magnetic diffusion wave propagating through the conductor. The wavefront on its own is not subject to thermal instabilities.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2016
Subjects:
электронный ресурс
труды учёных ТПУ
МГД-неустойчивость
скин-эффект
рентгеновское излучение
высокая энергия
кулоновский взрыв
hot spot
хот-спот
Online Access:http://dx.doi.org/10.1063/1.4971443
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=653111

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