Energy conversion mechanism for electron perpendicular energy in high guide-field reconnection

X. Guo; R. Horiuchi; C. Z. Cheng; Y. Kaminou; Y. Ono

doi:10.1063/1.4977908

Energy conversion mechanism for electron perpendicular energy in high guide-field reconnection

X. Guo, R. Horiuchi, C. Z. Cheng, Y. Kaminou, Y. Ono

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The energy conversion mechanism for electron perpendicular energy, both the thermal and the kinetic energies, is investigated by means of two-dimensional, full-particle simulations in an open system. It is shown that electron perpendicular heating is mainly due to the breaking of magnetic moment conservation in separatrix region because the charge separation generates intense variation of electric field within the several electron Larmor radii. Meanwhile, electron perpendicular acceleration takes place mainly due to the polarization drift term as well as the curvature drift term of E·u⊥ in the downstream near the X-point. The enhanced electric field due to the charge separation there results in a significant effect of the polarization drift term on the dissipation of magnetic energy within the ion inertia length in the downstream.

Original language	English
Article number	032901
Journal	Physics of Plasmas
Volume	24
Issue number	3
DOIs	https://doi.org/10.1063/1.4977908
Publication status	Published - 2017 Mar 1

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.4977908

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title = "Energy conversion mechanism for electron perpendicular energy in high guide-field reconnection",

abstract = "The energy conversion mechanism for electron perpendicular energy, both the thermal and the kinetic energies, is investigated by means of two-dimensional, full-particle simulations in an open system. It is shown that electron perpendicular heating is mainly due to the breaking of magnetic moment conservation in separatrix region because the charge separation generates intense variation of electric field within the several electron Larmor radii. Meanwhile, electron perpendicular acceleration takes place mainly due to the polarization drift term as well as the curvature drift term of E·u⊥ in the downstream near the X-point. The enhanced electric field due to the charge separation there results in a significant effect of the polarization drift term on the dissipation of magnetic energy within the ion inertia length in the downstream.",

author = "X. Guo and R. Horiuchi and Cheng, {C. Z.} and Y. Kaminou and Y. Ono",

note = "Funding Information: Grant-in-Aid from the Japan Society for the Promotion of Science (JSPS) Fellows 15J03758, Grant-in-Aid for Scientific Research 15H05750, and NIFS Collaboration Research Programs (NIFS15KNWS002 and NIFS16KNSS072). Publisher Copyright: {\textcopyright} 2017 Author(s).",

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T1 - Energy conversion mechanism for electron perpendicular energy in high guide-field reconnection

AU - Guo, X.

AU - Horiuchi, R.

AU - Cheng, C. Z.

AU - Kaminou, Y.

AU - Ono, Y.

N1 - Funding Information: Grant-in-Aid from the Japan Society for the Promotion of Science (JSPS) Fellows 15J03758, Grant-in-Aid for Scientific Research 15H05750, and NIFS Collaboration Research Programs (NIFS15KNWS002 and NIFS16KNSS072). Publisher Copyright: © 2017 Author(s).

PY - 2017/3/1

Y1 - 2017/3/1

N2 - The energy conversion mechanism for electron perpendicular energy, both the thermal and the kinetic energies, is investigated by means of two-dimensional, full-particle simulations in an open system. It is shown that electron perpendicular heating is mainly due to the breaking of magnetic moment conservation in separatrix region because the charge separation generates intense variation of electric field within the several electron Larmor radii. Meanwhile, electron perpendicular acceleration takes place mainly due to the polarization drift term as well as the curvature drift term of E·u⊥ in the downstream near the X-point. The enhanced electric field due to the charge separation there results in a significant effect of the polarization drift term on the dissipation of magnetic energy within the ion inertia length in the downstream.

AB - The energy conversion mechanism for electron perpendicular energy, both the thermal and the kinetic energies, is investigated by means of two-dimensional, full-particle simulations in an open system. It is shown that electron perpendicular heating is mainly due to the breaking of magnetic moment conservation in separatrix region because the charge separation generates intense variation of electric field within the several electron Larmor radii. Meanwhile, electron perpendicular acceleration takes place mainly due to the polarization drift term as well as the curvature drift term of E·u⊥ in the downstream near the X-point. The enhanced electric field due to the charge separation there results in a significant effect of the polarization drift term on the dissipation of magnetic energy within the ion inertia length in the downstream.

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Energy conversion mechanism for electron perpendicular energy in high guide-field reconnection

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