Contributions to few-channel spectrum unfolding

Technical Report · Wed Feb 01 04:00:00 EST 1978

OSTI ID:5338124

Perey, F G

In this report are two papers dealing with the subject of spectrum unfolding. These papers are closely related and will appear in the proceedings of two different conferences. Although they deal with analysis of dosimetry data, the method presented in these two papers is very general and applicable to any few-channel unfolding problem. The propagation of uncertainties in the input data is analyzed for the usual dosimetry unfolding solution. A new formulation of the dosimetry unfolding problem is proposed in which the most likely value of the spectrum is obtained. The relationship of this solution to the usual one is discussed. Also, the method of least squares is briefly reviewed, and the conditions under which it may be used are stated. From this analysis, a least-squares approach to the solution of the dosimetry neutron spectrum unfolding problem is introduced. The mathematical solution to this least-squares problem is derived from the general solution. The existence of this solution is analyzed in some detail. (WHK)

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5338124
• Report Number(s): ORNL/TM-6267; ENDF-259; ON: DE84008284
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACTIVATION DETECTORS
DATA COVARIANCES
DATA PROCESSING
DOSIMETRY
LEAST SQUARE FIT
MATRICES
MAXIMUM-LIKELIHOOD FIT
MEASURING INSTRUMENTS
NEUTRON DETECTORS
NEUTRON DOSIMETRY
NEUTRON SPECTRA
NUMERICAL SOLUTION
PROCESSING
RADIATION DETECTORS
SPECTRA
SPECTRA UNFOLDING