On validity of quasi-linear theory for non-resonant pitch-angle diffusion by finite amplitude parallel propagating Alfvén waves
| Autor: | Y. Nariyuki, M. Sasaki, T. Hada |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Physics of Plasmas. 29:034501 |
| ISSN: | 1089-7674 1070-664X |
| DOI: | 10.1063/5.0079286 |
| Popis: | Pitch-angle diffusion of charged particles via non-resonant interaction with low-frequency magnetohydrodynamic waves is discussed. Even in the presence of finite amplitude waves, a quasi-linear theory in which the normalization using wave energy is carried out agrees well with numerical results of test particle simulations. The quasi-linear theory for non-resonant diffusion is also in good agreement with the numerical results, even if the spectra of the waves are not broad. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|