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@jhmatthews jhmatthews released this 13 Dec 13:30
atomic77
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This is a release of atomic77 - note that it contains all the atomic data and not just the zipped up atomic77 directory. Ideally users should pull in changes from the data branch to avoid installing. There is also a tarball of atomic77 and the masterfile standard77 in ~/Dropbox/Python/atomic/atomic_77_release/.

The changes here were in order to fix bug #18 , and apply only to topbase cross section files. there are also some new macro atom data sets created for JM's work for macro atoms.

The procedure for extrapolating XSections was as follows:

  • read in the original topbase xsection
  • take the gradient in log space over the final 2 points
  • extrapolate using an extra 50 points distributed in log energy space up to 100KeV
  • if the Xsection is in the list off odd xsections, identified by eye, then we check if the gradient is >-2.5, then we fudge the gradient to -3 and extrapolate with that.

The results are summarised in the bug report, and the scripts used for the extrapolation are bundled here.

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