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Conversion of Magnetic Energy to Plasma Kinetic Energy During Guide Field Magnetic Reconnection in the Laboratory.
Bose, Sayak; Fox, William; Ji, Hantao; Yoo, Jongsoo; Goodman, Aaron; Alt, Andrew; Yamada, Masaaki.
Afiliação
  • Bose S; Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
  • Fox W; Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
  • Ji H; Department of Astrophysical Sciences, Princeton University, New Jersey 08540, USA.
  • Yoo J; Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
  • Goodman A; Department of Astrophysical Sciences, Princeton University, New Jersey 08540, USA.
  • Alt A; Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.
  • Yamada M; Department of Mechanical and Aerospace Engineering, Princeton University, New Jersey 08540, USA.
Phys Rev Lett ; 132(20): 205102, 2024 May 17.
Article em En | MEDLINE | ID: mdl-38829091
ABSTRACT
We present laboratory measurements showing the two-dimensional (2D) structure of energy conversion during magnetic reconnection with a guide field over the electron and ion diffusion regions, resolving the separate energy deposition on electrons and ions. We find that the electrons are energized by the parallel electric field at two locations, at the X line and around the separatrices. On the other hand, the ions are energized ballistically by the perpendicular electric field in the vicinity of the high-density separatrices. An energy balance calculation by evaluating the terms of the Poynting theorem shows that 40% of the magnetic energy is converted to particle energy, 2/3 of which is transferred to ions and 1/3 to electrons. Further analysis suggests that the energy deposited on particles manifests mostly in the form of thermal kinetic energy in the diffusion regions.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Estados Unidos