Effects of thunderstorms electric field on the energy of cosmic ray electron

Studies on energy changes of cosmic ray electron in thunderstorms electric field are very important to understand the acceleration mechanism of secondary charged particles caused by electric field. In this paper, Monte Carlo simulations were performed with CORSIKA to study the energy of cosmic ray electron in two typical electric fields. One is upper than the threshold field strength resulting in a runaway breakdown process (i.e. the order of 1 kV/cm), the other is lower than that (i.e. the order of 0.1 kV/cm). The energy spectra of electrons and positrons were obtained in different fields at different altitudes, especially above YBJ (4300 m a.s.l., Tibet, China). The decrease of the ground cosmic ray in intensity during thunderstorms observed in