The effects of density inhomogeneities on the radio wave emission in electron beam plasmas

Type III radio bursts are emissions associated with solar flares. They considered to be caused by electron beams traveling from the corona wind. Magnetic reconnection is a possible accelerator of in course flares since it causes unstable distribution functions, and density inhomogeneities (cavities). The properties emission an inhomogeneous environment still poorly understood. We capture non-linear kinetic plasma processes generation beam-related plasmas utilizing fully-kinetic Particle-In-Cell (PIC) code numerical simulations. Our model takes into account initial velocity functions (EVDFs) as they supposed created magnetic reconnection. focus our analysis on low-density regions strong fields. assumed EVDFs allow two distinct mechanisms wave emissions: due wave-wave interactions so-called cyclotron maser (ECME) direct wave-particle interactions. investigate effects conversion free energy electrostatic electromagnetic waves via ECME, well frequency shift resonances perpendicular gradients beam EVDFs. most important finding that number harmonics Langmuir increases presence inhomogeneities. additional generated coalescence beam-generated their harmonics.