Abstract—

One of the varieties of firehose instability, whose cause is not the temperature anisotropy of plasma particles but the dynamic pressure of the beam, is considered. It is shown that such a generation mechanism can lead to an effective increase in low-frequency perturbations not only of the Alfven type but also of the magnetosonic type and also lead to instability not only in the finite and high-pressure plasma but also in a low-pressure plasma. The characteristics of magnetosonic waves that are generated during the development of instability are investigated. The growth rate, the maximum inclination angle of the wave vector, the propagation velocity of the perturbations, and the criterion for the development of instability are found. The influence of the beam temperature on the characteristics of the generated perturbations is studied. As an example of the development of such instability, the formation process of the turbulent region in front of the shock wave of the Earth, as well as before the shock wave from the supernova, is analyzed.

中文翻译：

---

高速质子束存在下磁控型火管不稳定性的发展

摘要-

考虑了火喉不稳定的种类之一，其原因不是等离子体粒子的温度各向异性，而是光束的动态压力。结果表明，这种产生机制不仅可以有效地增加阿尔夫文类型的低频扰动，而且可以导致磁声类型的低频扰动，并且不仅导致有限和高压等离子体的不稳定，而且还导致不稳定性的增加。低压等离子体。研究了在不稳定发展过程中产生的磁声波的特性。找到了增长率，波矢的最大倾斜角，扰动的传播速度以及不稳定发展的判据。研究了束温度对所产生扰动特性的影响。