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Simulation Study On The Correlation Between The Ground Cosmic Rays And The Atmospheric Electric Field

Posted on:2017-01-06Degree:MasterType:Thesis
Country:ChinaCandidate:X J WangFull Text:PDF
GTID:2180330485988533Subject:Theoretical Physics
Abstract/Summary:PDF Full Text Request
The strong thunderstorm electric field can accelerate the small mass of electrons of the secondary cosmic particles to the high energy,and when meeting certain conditions, it will have the escapee avalanche effect and electronic data will show exponential growth.So in1992,A.Gurevich and others put forward the relativistic runaway electrons avalanche.This paper starting from Yangbajing cosmic observation results and published cosmic observations,studies the association of air shower and thunderstorm electric field from several aspects.After the analysis the data of Tibet Yangbajing atmospheric electric field in the ARGO experiment in 2012,the intensity of the earth electric field of can reach 1000V/cm,even higher in some cases.We use the corsika software, using Monte Carlo simulation to simulate the changes of the longitudinal development of thunderstorm electric field positive and negative electron.And in the high altitude, the change of positive and negative electron is consistent with the RREA mechanism.Through simulating the impact of thunderstorm electric field of high and low altitude on air shower longitudinal development,and the results show that there are virtually no influence of high-altitude electric field on the ground observations.For the influences of different thickness and different height electric field on the ground cosmic intensity, in order to obtain better significant ground observation, the suitable thunderstorm electric field thickness is 1000m-2000m and the height from the detection should be less than 600m. This paper simulates the effects of thunderstorm electric field on the opposite cosmic intensity, finding that in the negative electric field and more than 600V/cm positive electric field, the particle number increases with the increasing of electric field intensify;while in the field of less than 600V/cm,the total particle number appears the decline,which is about 4%. This is consistent with the Yangbajing experimental observation data. In order to explain this phenomenon, we simulate different primary energy, and air shower process under different electric field intensity.And finally, through the positive and negative electron energy distribution, and number ratio to give a reasonable explanation.The paper studies the association of cosmic shower and atmospheric electric field, which is consistent basically with the previous theoretical model,for the observed phenomena to...
Keywords/Search Tags:cosmic ray, thunderstorms electric field, RREA, Monte Carlo simulations, YBJ
PDF Full Text Request
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