#F CrossSec_BrennanCowan.dat #C This file has been created using CrossSec_BrennanCowan fortran program. #C This file belongs to the DABAX library. More information on #C DABAX can be found at: #C http://www.esrf.fr/computing/expg/subgroups/theory/DABAX/dabax.html #UT Cross Sections from Brennan & Cowan programs #U3W Sheet_ScatFac #UIDL xcrosssec #UD Cross Sections from Brennan & Cowan programs. #UD #UD The cross section factors stored in this file have been calculated #UD using the subroutine library by Brennan and Cowan: #UD S. Brennan and P.L. Cowan (1992), Rev. Sci. Instrum. 63, 850. #UD #UD The photo-electric cross section is calculated using the theoretical #UD approximation developed by Cromer and Liberman. This theory gives #UD accurate values far from an absorption edge but does not account #UD for the effects of neighboring atoms, which can be #UD critical near an absorption edge. #UD #UD The program suite described by Brennan and Cowan (1992) is #UD available by ftp from the authors from #UD http://www-ssrl.slac.stanford.edu/absorb.html or #UD ftp://ftpa.aps.anl.gov/pub/cross-section_codes/sb-1.0.tar.Z #UD WWW interfaces to the values produced by Brennan & Cowan library #UD can be found at the URL: #UD http://www.bmsc.washington.edu:80/scatter/AS_periodic.html #UD http://www.bmsc.washington.edu/scatter/periodic-table.html #UD #UD The data in this file contains 520 energy points in a logarithmic #UD scale, which can be calculated from: #UD Cte = log10(1.0D4/30.)/300. #UD Energy(i) = 30.*10.**((i-1)*Cte), 0