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Relativistic electron losses in Earth's radiation belts are usually attributed to electron resonant scattering by electromagnetic waves. One of the most important wave mode for such scattering is the electromagnetic ion cyclotron (EMIC)…

Resonant interactions between relativistic electrons and electromagnetic ion cyclotron (EMIC) waves provide an effective loss mechanism for this important electron population in the outer radiation belt. The diffusive regime of electron…

等离子体物理 · 物理学 2023-11-22 Xiaofei Shi , Anton Artemyev , Xiao-Jia Zhang , Didier Mourenas , Xin An , Vassilis Angelopoulos

Electromagnetic ion cyclotron waves are expected to pitch-angle scatter and cause atmospheric precipitation of relativistic ($> 1$ MeV) electrons under typical conditions in Earth's radiation belts. However, it has been a longstanding…

等离子体物理 · 物理学 2022-09-27 Xin An , Anton Artemyev , Vassilis Angelopoulos , Xiaojia Zhang , Didier Mourenas , Jacob Bortnik

Electromagnetic Ion Cyclotron (EMIC) waves can drive radiation belt depletion and Low-Earth Orbit (LEO) satellites can detect the resulting electron and proton precipitation. The ELFIN (Electron Losses and Fields InvestigatioN) CubeSats…

Electron resonant scattering by high-frequency electromagnetic whistler-mode waves has been proposed as a mechanism for solar wind electron scattering and pre-acceleration to energies that enable them to participate in shock drift…

In this work, we are concerned with the mathematical modeling of the electromagnetic (EM) scattering by arbitrarily shaped non-magnetic nanoparticles with high refractive indices. When illuminated by visible light, such particles can…

数学物理 · 物理学 2021-08-13 Habib Ammari , Bowen Li , Jun Zou

Electromagnetic ion cyclotron (EMIC) waves are important for Earth's inner magnetosphere as they can effectively drive relativistic electron losses to the atmosphere and energetic (ring current) ion scattering and isotropization. EMIC waves…

空间物理 · 物理学 2024-01-30 David S. Tonoian , Xiao-Jia Zhang , Anton Artemyev , Xin An

Recent advances in electron microscopy allowed the generation of high-energy electron wave packets of ultrashort duration. Here we present a non-perturbative S-matrix theory for scattering of ultrashort electron wave packets by atomic…

原子物理 · 物理学 2026-05-08 Yuya Morimoto , Lars Bojer Madsen

Previous theoretical studies have shown that attosecond electron dynamics can, in principle, be captured in electron momentum spectroscopy (EMS) using ultrashort electron pulses. By including further analytical considerations on the…

原子物理 · 物理学 2026-02-23 Pieter Hessel Harkema , Lars Bojer Madsen

The scattering of electromagnetic radiation by the particle gyrating in an external magnetic field is considered. Particular attention is paid to the low-frequency case, when the frequencies of incident radiation are much less than the…

天体物理学 · 物理学 2009-11-13 S. A. Petrova

The resonant interaction of relativistic electrons and whistler waves is an important mechanism of electron acceleration and scattering in the Earth radiation belts and other space plasma systems. For low amplitude waves, such an…

等离子体物理 · 物理学 2020-05-20 A. V. Artemyev , A. I. Neishtadt , A. A. Vasiliev

Electromagnetic ion cyclotron (EMIC) waves are discrete electromagnetic emissions separated by multiple ion gyrofrequencies. Harmonic EMIC waves are defined as waves with a strong electric or magnetic field (or both) at the harmonics of the…

空间物理 · 物理学 2024-12-23 Shujie Gu , Xu Liu , Lunjin Chen , Maria Usanova , Zhiyang Xia , Wenyao Gu

In this work we devise a theoretical and computational method to compute the elastic scattering of electrons from a non-spherical potential, such as in the case of molecules and molecular aggregates. Its main feature is represented by the…

化学物理 · 物理学 2023-01-18 Francesca Triggiani , Tommaso Morresi , Simone Taioli , Stefano Simonucci

The strong variations of energetic electron fluxes in the Earth's inner magnetosphere are notoriously hard to forecast. Developing accurate empirical models of electron fluxes from low to high altitudes at all latitudes is therefore useful…

Laser photons carrying non-zero orbital angular momentum are known and exploited during the last twenty years. Recently it has been demonstrated experimentally that such (twisted) electrons can be produced and even focused to a subnanometer…

量子物理 · 物理学 2016-09-15 D. V. Karlovets , G. L. Kotkin , V. G. Serbo

Resonant electron interaction with whistler-mode chorus waves is recognized as one of the main drivers of radiation belt dynamics. For moderate wave intensity, this interaction is well described by quasi-linear theory. However, recent…

等离子体物理 · 物理学 2018-11-28 D. Vainchtein , X. -J. Zhang , A. V. Artemyev , D. Mourenas , V. Angelopoulos , R. M. Thorne

Based on quantum theory, we investigate the distribution of the electrons scattered in nonlinear Compton effect by an electromagnetic plane wave. Deviations of the final electron momentum from its initial value are solely due to quantum…

原子物理 · 物理学 2015-06-05 Madalina Boca , Victor Dinu , Viorica Florescu

Electrons at relativistic speeds, diffusing in magnetic fields, cause copious emission at radio frequencies in both clusters of galaxies and radio galaxies, through the non-thermal radiation emission called synchrotron. However, the total…

宇宙学与河外天体物理 · 物理学 2017-11-28 Siddharth Malu , Abhirup Datta , Sergio Colafrancesco , Paolo Marchegiani , Ravi Subrahmanyan , D Narasimha , Mark H. Wieringa

The article discusses the correctness of the assumption about the similarity of molecular continuum electron functions with wave functions in electron-atom scattering. The elastic scattering of slow particles by pair of non-overlapping…

原子物理 · 物理学 2022-08-01 A. S. Baltenkov , I. Woiciechowski
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