کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1768975 | 1020251 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Evaluation of solar proton spectra using balloon cosmic ray observations and Monte Carlo simulation results Evaluation of solar proton spectra using balloon cosmic ray observations and Monte Carlo simulation results](/preview/png/1768975.png)
We have developed a method to evaluate the spectrum of solar energetic protons at the top of the Earth’s atmosphere from the measurements of our balloon cosmic ray experiment. By using the Monte Carlo PLANETOCOSMICS code based on Geant4 we compute the interaction of solar protons [10 MeV–10 GeV] with the Earth’s atmosphere. We obtain the angular and energy distributions of secondary particles (p, e−, e+, photons, muons) at different atmospheric levels as a function of primary proton spectra. By comparing the calculated depth dependence of the particle flux with the data obtained by our balloon experiment we can deduce the parameters of the solar proton spectrum that best fit the observations. In this paper we discuss our solar proton spectrum estimation method, and present results of its application to selected solar proton events from 2001 to 2005.
Journal: Advances in Space Research - Volume 39, Issue 9, 2007, Pages 1458–1461