GEM: Whistler-Mode Waves in the Radiation Belt: Propagation and Wave-Particle Interactions

GEM：辐射带中的惠斯勒模波：传播和波粒相互作用

• 批准号: 1068222
• 负责人: Anatoly Streltsov
• 金额: $ 28.3万
• 依托单位: Dartmouth College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-05-15 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1068222&HistoricalAwards=false
• 关键词: GEM; Whistler; Mode; Waves; Radiation

This project will develop a 2D hybrid plasma simulation model to conduct simulations of the propagation of whistler/chorus waves in the radiation belt region and their interactions with energetic electrons. Wave propagation will be modeled in a dipole magnetic field with cross-field density gradients, which will make it possible to study phenomena such as wave ducting. The investigation will address nonlinear wave-particle interaction of whistler waves and energetic electrons and the processes that can generate waves with large amplitudes.These waves play a critical role in the energizaton of particles in Earth's radiation belts. The energization of particles in the radiation belts play an important role in space weather processes that can affect satellites. The project may also lead to new understanding of methods for radiation-belt remediation. The project will develop new computer codes that may have the potnetial to provide transformative techniques for dealing with space plasmas. Much of the reseach and code development will be carried out by a graduate student and the project therefore has strong educational benefits.

本项目将建立二维混合等离子体模拟模型，模拟辐射带区域内哨声/合唱波的传播及其与高能电子的相互作用。波的传播将在具有交叉场密度梯度的偶极磁场中建模，这将使研究波导管等现象成为可能。该研究将解决哨声波和高能电子的非线性波粒相互作用，以及可以产生大振幅波的过程。这些波对地球辐射带中粒子的能量发挥着关键作用。辐射带中粒子的能量在影响卫星的空间天气过程中起着重要作用。该项目还可能导致对辐射带修复方法的新认识。该项目将开发新的计算机代码，这些代码可能为处理空间等离子体提供变革性的技术。大部分研究和代码开发将由研究生进行，因此该项目具有很强的教育效益。