Dear Angelo,
Thank you for your reply. The reason I am opting for external particle spectra is because I want to assess a GCR event outside of Earth’s influence (however from your link to the similar article this should also be possible by omitting the GCR-SPE but it comes with cautions as mentioned by you). In OLTARIS for example, one can select the Mars Surface environment which is where I want to assess the GCR event. Furthermore, several GCR models (e.g. Badhwar-O’Neill 2020) can also be selected here.
Following the Sampling from energy spectra post from Chris and its included files, I found the README and the example (Spec01) files.
However, I still have a question. The OLTARIS .dat file provides the energy spectrum and differential flux but for different particle species (Z from 1 and beyond), from your link, it still wasn’t clear how to deal with energy spectra and differential flux for several particle species. If only one particle species is used, then it is clear to use the Emin in the first column, Emax in the second column and the differential flux in the third column. However, if one wishes to add more particle species to this .dat file, how should this be done exactly?
Thank you kindly,
Kim