Investigation Into Relativistic Magnetic Flux Amplification
2016 (English)In: IEEE Transactions on Plasma Science, ISSN 0093-3813, E-ISSN 1939-9375, Vol. 44, no 1, 2-6 p.Article in journal (Refereed) PublishedText
Amplification of magnetic flux and electric polarization fields caused by a plasma streaming at relativistic velocity into a magnetic field is discussed. It is shown that the electrostatic polarization field that arises in a plasma beam streaming across magnetic field lines at relativistic velocities will cause amplification of the magnetic flux. This effect is in complete contrast to the expulsion of the magnetic field from the plasma interior that can be expected in high beta(K) plasmas, where beta(K) is the kinetic energy density in the plasma stream divided by the energy density in the magnetic field. The amplification is shown to be caused by the relativistic motion of the space charge layers setting up the polarization field. 3-D electromagnetic particle-in-cell simulations that support this theory are presented.
Place, publisher, year, edition, pages
IEEE , 2016. Vol. 44, no 1, 2-6 p.
Magnetic flux amplification, particle in cell, plasma magnetic field penetration, relativistic
IdentifiersURN: urn:nbn:se:kth:diva-182866DOI: 10.1109/TPS.2015.2507264ISI: 000368038700001OAI: oai:DiVA.org:kth-182866DiVA: diva2:906497
QC 201602242016-02-242016-02-232016-02-24Bibliographically approved