Hall Effect in Laboratory and Space Current Sheets


Цитировать

Полный текст

Открытый доступ Открытый доступ
Доступ закрыт Доступ предоставлен
Доступ закрыт Только для подписчиков

Аннотация

The role of the Hall effect in the formation of thin current sheets (CSs) is analyzed by comparing results of laboratory and satellite experiments. In spite of the strong difference in the plasma parameters, both laboratory and space CSs are characterized by the hot ion component and cold isotropic electron component. Such a relation between the ion and electron components would have to guarantee the predominant contribution of the ion diamagnetic drift current to the total current density. However, the Cluster spacecraft observations of thin CSs in the Earth’s magnetotail have revealed the predominance of a strong electron (rather than ion) current. This may be due to the Hall effect, which causes generation of electric fields, which redistribute the CS currents in favor of the electron currents at the expense of the ion currents. Observations demonstrate that the thinner the CS, the stronger this effect. A similar tendency was also observed in laboratory experiments on CS formation in plasma with ions of different mass, which made it possible to vary the CS relative thickness and monitor the consequences of the Hall effect. Comparison of results of satellite and laboratory experiments indicates that the Hall effect plays an important role in the formation of thin CSs in both magnetospheric and laboratory plasmas.

Об авторах

E. Yushkov

Space Research Institute, Russian Academy of Sciences; Moscow State University, Faculty of Physics

Автор, ответственный за переписку.
Email: yushkov.msu@mail.ru
Россия, Moscow, 117997; Moscow, 119991

A. Frank

Prokhorov General Physics Institute of the Russian Academy of Sciences

Автор, ответственный за переписку.
Email: annfrank@fpl.gpi.ru
Россия, Moscow, 119991

A. Artemyev

Space Research Institute, Russian Academy of Sciences; Institute of Geophysics and Planetary Physics

Email: annfrank@fpl.gpi.ru
Россия, Moscow, 117997; UCLA

A. Petrukovich

Space Research Institute, Russian Academy of Sciences

Email: annfrank@fpl.gpi.ru
Россия, Moscow, 117997

R. Nakamura

Space Research Institute

Email: annfrank@fpl.gpi.ru
Австрия, AAS, Graz


© Pleiades Publishing, Ltd., 2018

Данный сайт использует cookie-файлы

Продолжая использовать наш сайт, вы даете согласие на обработку файлов cookie, которые обеспечивают правильную работу сайта.

О куки-файлах