RSAP - A Code for Display of Neutron Cross Section Data and SAMMY Fit Results

Sayer, R.O.

Oak Ridge National Laboratory

关键词: Computer Graphics;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;    Neutrons;    Cross Sections;    R Codes;   

DOI  :  10.2172/777694
RP-ID  :  ORNL/TM-2001/15
RP-ID  :  AC05-96OR22464
RP-ID  :  777694

美国|英语

来源: UNT Digital Library

【 摘 要 】

RSAP is a computer code for display of neutron cross section data and selected SAMMY output. SAMMY is a multilevel R-matrix code for fitting neutron time-of-flight cross-section data using Bayes' method. RSAP, which runs on the Digital Unix Alpha platform, reads ORELA Data Files (ODF) created by SAMMY and uses graphics routines from the PLPLOT package. In addition, RSAP can read data and/or computed values from ASCII files with a format specified by the user. Plot output may be displayed in an X window, sent to a postscript file (rsap.ps), or sent to a color postscript file (rsap.psc). Thirteen plot types are supported, allowing the user to display cross section data, transmission data, errors, theory, Bayes fits, and residuals in various combinations. In this document the designations theory and Bayes refer to the initial and final theoretical cross sections, respectively, as evaluated by SAMMY. Special plot types include Bayes/Data, Theory--Data, and Bayes--Data. Output from two SAMMY runs may be compared by plotting the ratios Theory2/Theory1 and Bayes2/Bayes1 or by plotting the differences (Theory2-Theory1) and (Bayes2-Bayes1).