Least-squares dosimetry unfolding: the program STAY'SL. [STAY'SL Code]

Abstract

A PDP-10 FORTRAN IV computer program STAY'SL, which solves the dosimetry unfolding problem by the method of least squares, is described. The solution (the output spectrum and its covariance matrix) is calculated by minimizing chi-square based on the input data (the activation data, the input spectrum, the dosimetry cross sections and their uncertainties given by covariance matrices). The solution reflects therefore the uncertainties in all of the input data and their correlations. The correlations among the various dosimetry cross sections are taken into account; however, the activation data, input spectrum and cross sections as classes are assumed to be uncorrelated with each other.

Keywords

GENERAL STUDIES OF NUCLEAR REACTORS
NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPUTER CODES
S CODES
SHIELDING
NEUTRON DOSIMETRY
COMPUTER CALCULATIONS
LEAST SQUARE FIT
NUMERICAL SOLUTION
REACTOR SAFETY
SPECTRA UNFOLDING
DATA PROCESSING
DOSIMETRY
MAXIMUM-LIKELIHOOD FIT
PROCESSING
SAFETY
* - NUCLEAR REACTOR TECHNOLOGY- THEORY & CALCULATION
- RADIATION & SHIELDING PHYSICS- SHIELDING CALCULATIONS & EXPERIMENTS- (-1987)

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