强激光与粒子束2024，Vol.36Issue(1)：123-129,7.DOI:10.11884/HPLPB202436.230136
相对论热等离子体中电子声波的非线性频移
Nonlinear frequency shift of electron acoustic waves in relativistic hot plasma
摘要
Abstract
Based on the electromagnetic fluid model,the effects of electron temperature and plasma density on the nonlinear frequency shift of electron acoustic wave in a relativistic hot plasma are investigated.The nonlinear frequency shift equation of electron acoustic wave is obtained by using the nonlinear frequency shift theory and perturbation method.The results show that the plasma density,the first harmonic amplitude and the electron temperature are the main factors that determine the nonlinear frequency shift of electron acoustic wave in relativistic hot plasma.For weak excitation,the nonlinear frequency shift increases with the increase of electron temperature and the first harmonic amplitude,and the plasma density inhibits the nonlinear frequency shift.The impact of electron temperature and the plasma density on nonlinear frequency shift shows a strong nonlinear character.The results provide a theoretical evidence for understanding the high power laser-plasma interaction and the generation of harmonics.关键词
电磁脉冲/热等离子体/电子声波/非线性频移Key words
electromagnetic pulse/hot plasma/electron acoustic wave/nonlinear frequency shift分类
数理科学引用本文复制引用
钱平通,张小波,黄茂,薛具奎..相对论热等离子体中电子声波的非线性频移[J].强激光与粒子束,2024,36(1):123-129,7.基金项目
国家自然科学基金项目(12305276、11865014、11765017、11764039) （12305276、11865014、11765017、11764039）
甘肃省自然科学基金项目(22JR5RA174) （22JR5RA174）
甘肃省高等学校创新能力提升项目(2022A-011) （2022A-011）
西北师范大学科技创新项目(NWNU-LKQN2022-05) （NWNU-LKQN2022-05）
