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I am searching for a software/method, possibly open-source or free, to estimate the radiation dose for an orbit around earth.

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    $\begingroup$ SPENVIS (Space Environment Information System) is free to use. $\endgroup$
    – Xukrao
    Commented Dec 13, 2021 at 21:27
  • $\begingroup$ @Xukrao if that satisfies the OP"s description then I think you can post it as an answer if you like. Just add a sentence or two describing it, which can be simply copy/pasted and quoted from the site's description. $\endgroup$
    – uhoh
    Commented Dec 13, 2021 at 21:45

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SPENVIS is free to use. It is described on its website as:

SPENVIS is ESA's SPace ENVironment Information System, a WWW interface to models of the space environment and its effects; including cosmic rays, natural radiation belts, solar energetic particles, plasmas, gases, and "micro-particles".

With SPENVIS, one can generate a spacecraft trajectory or a coordinate grid and then calculate:

  • geomagnetic coordinates
  • trapped proton and electron fluxes and solar proton fluences
  • radiation doses (ionising and non-ionising) for simple geometries
  • a sectoring analysis for dose calculations in more complex geometries
  • damage equivalent fluences for Si, GaAs and multi-junction solar cells
  • Geant4 Monte Carlo analysis for doses and pulse height rates in planar and spherical shields
  • ion LET and flux spectra and single event upset rates
  • trapped proton flux anisotropy
  • atmospheric and ionospheric densities and temperatures
  • atomic oxygen erosion depths
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  • $\begingroup$ SPENVIS has been used on at least two NASA funded missions. $\endgroup$
    – ChrisR
    Commented Dec 15, 2021 at 1:40

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