Accession Number : AD0470890


Title :   NEUTRON FLUX SPECTRA DETERMINATION BY FOIL ACTIVATION, VOLUME I. N ADVANCED FOIL ACTIVATION METHOD OF DETERMINING NEUTRON FLUX SPECTRA OR RADIATION EFFECTS STUDIES.


Descriptive Note : Technical rept. Apr 64-Jun 65,


Corporate Author : IIT RESEARCH INST CHICAGO ILL


Personal Author(s) : McElroy,W N


Report Date : Aug 1965


Pagination or Media Count : 294


Abstract : The qualitative aspects of the activation technique of neutron flux spectral determination are well known. The quantitative aspects are not so well known. In part, the failure of correlation and subsequent understanding of neutron radiation effect studies is attributed to a lack of adequate knowledge about the form of neutron environments. An Advanced Activation Method of Neutron Flux Spectral Determination based on the use of updated and more accurate cross section data and activation measurements is presented. This method will permit the definition of neutron flux spectral forms with increased accuracy for radiation effect studies. The results of error analysis studies on methods of foil activity data reduction and requirements on the accuracy of activation detector cross section data and activity measurements are presented and discussed. The appendixes of this volume contain tabulated data that are necessary for the performance of Step I of the advanced method of foil activation data reduction. Volume II of this report presents and discusses the updated evaluated cross section data. Volume III discusses the computer code required for the performance of Step II of the advanced method. Volume IV presents the results of Tory II-C flux spectral measurements using the advanced method of data reduction. (Author)


Descriptors :   *NEUTRON FLUX , DAMAGE , DAMAGE , NEUTRON SPECTRUM , NUCLEAR RADIATION SPECTROSCOPY , TABLES(DATA)


Distribution Statement : APPROVED FOR PUBLIC RELEASE