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BSR3: B-spline atomic R-matrix codes, third version

BSR is a general program to calculate atomic continuum processes using the B-spline R-matrix method, including electron-atom and electron-ion scattering, and radiative processes such as bound-bound transitions, photoionization and polarizabilities. The calculations can be performed in LS-coupling or in an intermediate-coupling scheme by including terms of the Breit-Pauli Hamiltonian.

The present version is the deep recomposition of the original version published in

  >  Computer Physics Communications 174 (2006) 273–356 

Numerous new features and extansions are added, see doc folder in this repository and the references:

• Atomic structure calculations using MCHF and BSR

  Oleg Zatsarinny and Charlotte Froese Fischer
  Computer Physics Communications 180 (2009) 2041–2065

• The B-spline R-matrix method for atomic processes: application to atomic structure, electron collisions and photoionization

  Oleg Zatsarinny and Klaus Bartschat
  J. Phys. B: At. Mol. Opt. Phys. 46 (2013) 112001