MCNPX Data Library Access Page *

From this page, you can select enhanced neutron data libraries, the first version of the photonuclear libraries, the new proton libraries, and their relevant XSDIR entries. Click the button for the data libraries, and follow the subsequent instructions.

LA150N Neutron Data Libraries. These include 42 isotopes:

1H, 2H, 9Be (100 MeV), natC, 14N, 16O, 27Al, 28Si, 29Si, 30Si, 31P, natCa, 50Cr, 52Cr, 53Cr, 54Cr, 54Fe, 56Fe, 57Fe, 58Ni, 60Ni, 61Ni, 62Ni, 64Ni, 63Cu, 65Cu, 93Nb, 182W, 183W, 184W, 186W, 196Hg, 198Hg, 199Hg, 200Hg, 201Hg, 202Hg, 204Hg, 206Pb, 207Pb, 208Pb, 209Bi

***NEW*** NRG-2003-n

The NRG-2003 200 MeV neutron libraries have just been released by NRG-Petten, and include 26 isotopes:

40Ca, 42Ca, 43Ca, 44Ca, 46Ca, 48Ca, 45Sc, 46Ti, 47Ti, 48Ti, 49Ti, 50Ti, 54Fe, 56Fe, 57Fe, 58Fe, 70Ge, 72Ge, 73Ge, 73Ge, 74Ge, 76Ge, 204Pb, 206Pb, 207Pb, 208Pb, 209Bi

***NEW*** NRG-2003-p

The NRG-2003 200 MeV proton libraries have just been released by NRG-Petten, and include 26 isotopes:

40Ca, 42Ca, 43Ca, 44Ca, 46Ca, 48Ca, 45Sc, 46Ti, 47Ti, 48Ti, 49Ti, 50Ti, 54Fe, 56Fe, 57Fe, 58Fe, 70Ge, 72Ge, 73Ge, 73Ge, 74Ge, 76Ge, 204Pb, 206Pb, 207Pb, 208Pb, 209Bi

LA150U: Initial photonuclear library. These include 12 isotopes:

12C, 16O, 27Al, 28Si, 40Ca, 56Fe, 63Cu, 181Ta, 184W, 206Pb, 207Pb, 208Pb

Additional photonuclear data on a Web site maintained by Bob MacFarlane of Los Alamos Group T-16.

LA150H Proton Data Libraries (updated 11/20/01). These include isotopes:

1H, 2H, 12C, 14N, 16O, 27Al, 28Si, 29Si, 30Si, 31P, 40Ca, 50Cr, 52Cr, 53Cr, 54Cr, 54Fe, 56Fe, 57Fe, 58Ni, 60Ni, 61Ni, 62Ni, 64Ni, 63Cu, 65Cu, 93Nb, 182W, 183W, 184W, 186W, 196Hg, 198Hg, 199Hg, 200Hg, 201Hg, 202Hg, 204Hg, 206Pb, 207Pb, 208Pb, 209Bi

A new alternate version of PHTLIB. This new library contains a better description of the gamma decay process and should produce a better gamma emission spectrum. However, gamma emission from metastable states with halflives equal to or greater than 1 msec is blocked.

endf7u.xs: New xsdir lines for the Beta version of the ENDF/B-VII photonuclear library. These lines can be added to your existing xsdir file, after the "directory" line.

endf7u.tar.gz: Tar/gzip file consisting of a type 1 (ASCII)Beta version of the ENDF/B-VII photonuclear data library. This library is not the final official version of the ENDF/B-VII photonuclear library, which will be released later this year, so caution is advised on its use and feedback is requested if problems are found.