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2018-08-14fix how the RMS scattering angle is calculatedtlatorre
The RMS scattering angle calculation comes from Equation 33.15 in the PDG article on the passage of particles through matter. It's not entirely obvious if this equation is correct for a long track. It seems like it should be integrated along the track to add up the contributions at different energies, but it's not obvious how to do that with the log term. In any case, the way I was previously calculating it (by using the momentum and velocity at each point along the track) was definitely wrong. I will try this out and perhaps try to integrate it later.
2018-08-14add refractive index for heavy and light water from snomantlatorre
2018-08-14update muon.c to use the new table for heavy watertlatorre
2018-08-14add a table for muon dE/dx and range for D2Otlatorre
There was no entry for heavy water at http://pdg.lbl.gov/2018/AtomicNuclearProperties/index.html, so I emailed Don Groom who maintains the website. Amazingly he agreed to rerun the code to add an entry for D2O. Apparently all of the old Fortran code was not set up to deal with isotopes, but he updated everything and reran the code for heavy water! The new results are at http://pdgprod.lbl.gov/~deg/AtomicNuclearProperties/ but they should make it to the main page soon.
2018-08-14move everything to src directorytlatorre