强朗缪尔湍动与太阳质子电子事件

Strong Langmuir Turbulence and Solar Proton Electron Events

在空间探测中,太阳质子事件都伴生非相对论性电子,却常有观测到电子流而无质子成分的纯电子事件.纯电子事件中,电子流量比通常电子事件低一个量级左右.荷电粒子会因为与强朗缪尔湍动的相互作用而得到加速,经过理论推导发现电子和质子能否得到加速与朗缪尔湍动强度有关.代入日冕活动区物理量的典型值,计算发现正是由于质子和电子的加速条件对朗缪尔湍动强度的要求不同而产生了上述现象.

In space exploration, solar proton events are observed to be accompanied by non-relativistic electrons. But pure electron events are often observed in which only electrons are contained with no protons. The electron flux in pure electron events is about one tenth of that in common electron events. After analyzing the interaction between charge particles and strong Langmuir turbulence we find whether the protons and electron can be accelerated is relevant to the intensity of Langmuir turbulence. Computing the characteristic physical value in active corona region, we find that the intensity of Langmuir turbulence can explain well the above mentioned phenomenon.