8. RELATED AND AUXILIARY PROGRAMS
XREAD is a program for the IBM PC and compatibles for the retrieval and display of the partial interaction coefficients and total attenuation coefficients for any selected element. The input is interactive. The user specifies the element by atomic number, and a formatted data file with column headings is produced. Output cross sections are in units of barns per atom, and attenuation coefficients are in units of cm2/g. Note: the total attenuation coefficient without coherent scattering includes bound Compton scattering.
The XREAD program is written in FORTRAN 77 and was tested at RSIC using the Ryan-McFarland Version 2.42 compiler. NBS provided both source and executable programs, compiled by a Ryan-McFarland compiler, on the distribution diskettes. A math co-processor is necessary.
The mainframe-minicomputer version, which was tested on both Data General and VAX computers, is distributed on tape with all the data in one formatted file. Two FORTRAN 77 retrieval programs, tested on the VAX and Data General families of computers, are provided. RANDOM will produce a direct-access file from the basic data file; and READX will retrieve data for particular elements interactively, producing output similar to that of XREAD. The total attenuation coefficient, without coherent and based on free-electron Compton scattering, is also listed in the READX output.