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Plasma Jet Braking: Energy Dissipation and Nonadiabatic Electrons
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen.
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen.
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen.ORCID iD: 0000-0003-1654-841x
Uppsala universitet, Institutet för rymdfysik, Uppsalaavdelningen.
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2011 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 106, no 16Article in journal (Refereed) Published
Abstract [en]

We report in situ observations by the Cluster spacecraft of wave-particle interactions in a magnetic flux pileup region created by a magnetic reconnection outflow jet in Earth's magnetotail. Two distinct regions of wave activity are identified: lower-hybrid drift waves at the front edge and whistler-mode waves inside the pileup region. The whistler-mode waves are locally generated by the electron temperature anisotropy, and provide evidence for ongoing betatron energization caused by magnetic flux pileup. The whistler-mode waves cause fast pitch-angle scattering of electrons and isotropization of the electron distribution, thus making the flow braking process nonadiabatic. The waves strongly affect the electron dynamics and thus play an important role in the energy conversion chain during plasma jet braking.

Place, publisher, year, edition, pages
American Physical Society, 2011. Vol. 106, no 16
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Physical Sciences
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URN: urn:nbn:se:kth:diva-253502DOI: 10.1103/PhysRevLett.106.165001ISI: 000290095300009Scopus ID: 2-s2.0-79960651519OAI: oai:DiVA.org:kth-253502DiVA, id: diva2:1325402
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QC 20190625

Available from: 2019-06-15 Created: 2019-06-15 Last updated: 2019-06-25Bibliographically approved

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