Scholarlink

Abstract <p>Using a numerical model, the influence of intermittency on the acceleration of particles in the equatorial plane of the Earth’s magnetotail was studied. For comparison with observational data, we selected the event of July 17, 2001, when plasma flows with velocities of up to 400 km/s and an amplitude of the turbulent magnetic field of the order of 10 nT were observed in the plasma layer of the magnetotail for more than 10 min. Modeling of the electromagnetic field is carried out using a superposition of wavelets, which are distributed uniformly throughout the computational domain. By means of a special distribution of amplitudes, we ensure that the resulting field is multifractal and intermittent. It is shown that, when accelerated in an intermittent field, the energy spectra of particles rise and flatten, which means that particles are able to gain more energy than when accelerated in a turbulent plasma layer without taking into account intermittency.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

An Investigation of the Effect of Intermittency on the Turbulent Field on Particle Acceleration in the Plasma Sheet of the Earth’s Magnetotail

  • 期刊论文

  • 发表日期：

    2025年4月1日

查看全文
  • N. N. Levashov,
  • V. Yu. Popov,
  • H. V. Malova,
  • L. M. Zelenyi

摘要

Abstract

Using a numerical model, the influence of intermittency on the acceleration of particles in the equatorial plane of the Earth’s magnetotail was studied. For comparison with observational data, we selected the event of July 17, 2001, when plasma flows with velocities of up to 400 km/s and an amplitude of the turbulent magnetic field of the order of 10 nT were observed in the plasma layer of the magnetotail for more than 10 min. Modeling of the electromagnetic field is carried out using a superposition of wavelets, which are distributed uniformly throughout the computational domain. By means of a special distribution of amplitudes, we ensure that the resulting field is multifractal and intermittent. It is shown that, when accelerated in an intermittent field, the energy spectra of particles rise and flatten, which means that particles are able to gain more energy than when accelerated in a turbulent plasma layer without taking into account intermittency.