Abstract
The improvements of the neutron unfolding package code NEUPAC-83 were made sucessfully on several points such as an introduction of non-negative estimation algorithm (J-log method) and a preparation of the dosimetry cross section with covariance library.
In addition to these improvements, systematic study has been made by the NEUPAC-83, focussing our attention on the spectral covariance effects in the adjustment calculations. The results may be summarized as follows:
(1) adjusted integral values are influenced considerably by the prior probability density function of initial neutron spectrum, especially by the correlation factor, and (2) the determination method of statistically permitted area of the solutions should be applied more effectively in the adjustment calculation.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
M. Nakazawa and A. Sekiguchi, “Several Applications of Jl- Unfolding Method of Multiple-Foil Data to Reactor Neutron Dosimetry”, The 3rd ASTM-EURATOM Symp. on Reactor Dosimetry, Ispra 1979.
T.Taniguchi et al., “Neutron Unfolding Package Code NEUPAC- 83 “, NEUT Research Report 83–10, 1983.
R. E. MacFarlane et al., “The NJOY Nuclear Data Processing System”, Volume 1 and 2, LA-9303-M, ENDF-32, May 1982.
Proceeding of 2nd PNC/DOE Specialists1 Meeting on Collaborative Dosimetry Test, SA013 FWG81–01, 1981.
M. Nakazawa et al., “A New Adjustment Code Based on The Bayes’ Theory Combined with The Monte-Carlo Technique”, The 5th ASTMEURATOM Symp. on Reactor Dosimetry, Geesthacht, Sept. 1984
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1985 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Taniguchi, T., Ueda, N., Nakazawa, M., Sekiguchi, A. (1985). Systematic Study on Spectral Effects in the Adjustment Calculations Using the NEUPAC-83 Code. In: Genthon, J.P., Röttger, H. (eds) Reactor Dosimetry. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-9726-0_16
Download citation
DOI: https://doi.org/10.1007/978-94-010-9726-0_16
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-9728-4
Online ISBN: 978-94-010-9726-0
eBook Packages: Springer Book Archive