Adjustment to Cross Section Data to fit Integral Experiments by Least Squares Method

Abstract

The idea of adjustment of cross section data by the least squares method to fit calculated integral data to measured values was first proposed in 1964 at the Geneva Conference. The proposal encountered severe criticism from a number of influential scientists, and international opinion has since been sharply divided on whether or not the method should be accepted. Meanwhile, much effort has been directed by others favoring the method toward improving the method, and toward offering convincing answers to each criticism. The results of these efforts were presented at the Tokyo Symposium in 1973, in the form of an improved method of the least squares adjustment. This paper reviews these past developments and discusses the remaining topics concerning the adjustment.

KEYWORDS:

• FBR type reactors
• cross sections
• integral data
• adjustment
• least square method
• errors
• statistics
• Chi-square test
• correlation matrix
• accuracy