
Accession Number : AD0670479
Title : GAMMARAY PULSEHEIGHT SPECTRA: FORMATION OF A RESPONSE MATRIX FOR ITERATIVE UNFOLDING,
Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF
Personal Author(s) : Sam,Daniel ; Bunney,Leland R. ; Heater,Drexel C.
Report Date : 20 NOV 1967
Pagination or Media Count : 45
Abstract : The gammaray spectra of fission products resulting from nuclear weapon detonations provide basic data required in fallout exposure and shielding calculations. One method for obtaining the gammaray spectra is the application of the iterative unfolding technique to the measured pulseheight spectra. This technique, however, requires the construction of a response matrix which contains a series of response functions of the detector assembly to various gammaray energies. This report describes the essential steps in the construction of a response matrix, having the dimensions 100 energy bins and 1024 channels, used to obtain the complex gammaray spectra from the experimental pulseheight spectra. The photons of interest have an energy range extending from 0.060 to 5.00 Mev. The report also presents the associated computer programs for generating and using the response matrix. The results of unfolding of synthesized pulseheight spectra having a known number of gamma rays of known energy are presented. The computer programs are written in Fortran II language for use with an IBM704 computer. (Author)
Descriptors : (*NUCLEAR WEAPONS, GAMMA RAYS), (*FISSION PRODUCTS, RADIATION MEASURING INSTRUMENTS), DETONATIONS, FALLOUT, NUCLEAR ENERGY, PULSE HEIGHT ANALYZERS, RESPONSE, DETECTORS, ENERGY, SHIELDING, PHOTONS, COMPUTER PROGRAMS, STATISTICAL PROCESSES, MATHEMATICAL ANALYSIS
Subject Categories : Radioactiv, Radioactive Wastes & Fission Prod
Nuclear Weapons
Distribution Statement : APPROVED FOR PUBLIC RELEASE