PROTON AND ELECTRON KINETICS AND DYNAMICS IN FLARING ATMOSPHERES

该项目旨在研究质子和电子在加速时的动力学，通过改变电场，在重新连接电流片（RCS）的磁重联过程中产生的，由相互作用的环路形成，并在它们沉淀到环路腿。粒子轨迹及其在电场控制下的RCS中的分布将使用测试粒子、粒子池和全动力学方法来研究考虑到集体电场效应的三维磁场构型中不同大小的磁场分量。这些解决方案将用于寻找粒子捕获或从RCS作为完全或部分分离的电子或质子束喷射的条件。在不同的磁重联情况下，将推导出它们在弹射时的能谱。电子和质子束在汇聚磁场下进入燃烧大气的沉淀将用Bradford动力学代码进一步研究，包括与粒子（电子）和粒子和波（质子）的相互作用。我们将研究回流对光束的中和作用及其产生的硬x射线和微波发射，并检验光束对等离子体波产生的稳定性。我们将把每一种粒子注入引起的流体动力学响应所引起的等离子体加热和耀斑大气的宏观速度与日较日观测结果进行比较，并选择合适的粒子输运情景。

The project aims to investigate proton and electron kinetics at acceleration by varying electric field, generated during magnetic reconnection in a reconnecting current sheet (RCS), formed by interacting loops, and at their precipitation into the loop legs. The particle trajectories and their distributions in an RCS governed by the electric field will be investigated using test particle, particle-in-cell and full kinetic approaches for various magnitudes of the magnetic field components of a 3D magnetic configuration taking into account the collective electric field effects. These solutions will be used to find the conditions for particle trapping or ejection from an RCS as fully or partially separated electron or proton beams. Their energy spectra at ejection will be deduced for different scenarios of magnetic reconnection. The precipitation of electron and proton beams into flaring atmospheres with a converging magnetic field will be further investigated with the Bradford kinetic code, including interaction with particles (for electrons) and with particles and waves (for protons). We will study the beams neutralisation by return currents, their resulting hard X-ray and microwave emission and examine beams' stability to the generation of plasma waves The plasma heating and macro-velocities of flaring atmospheres caused by hydrodynamic responses to the injection of each type of particles will be compared with the heliosesimic observations and suitable scenarios for particle transport will be selected.