LAPHAN: A CODE TO COMPUTE THE P$sub 0$ TO P$sub 4$ MULTIGROUP PHOTON- PRODUCTION MATRICES.
Los Alamos Scientific Lab., N. Mex. Indiana Univ., Bloomington. Dept. of Physics (US), D Dudziak, Gerald E. Bosler · 1973
The LAPHAN code is a revision and extension of previous codes in the LAPH series -LAPH and LAPHANO.Photon-production crosssection and angular distribution data are retrieved from the ENDF Files 12 through 15, processed into specified photon and neutron energy groups, and combined as necessary to produce up to P^ photonproduction matrices and photon-energy-production matrices.Produc tion cross sections are averaged over neutron fine groups and then collapsed into a given broad-group structure using specified weight ing functions.Input is in DTF-IV format, and output matrices are in either DTF-IV or FIDO format.The code is written in ANS stand ard FORTRAN for computers with a 65K^q memory.