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Title: International Reactor Dosimetry File 2002 (IRDF-2002),Technical Report Series No. 452

Abstract

The last tested version of the reactor dosimetry file IRDF-90 V2 was released in 1993. Since then a large number of new experimental data have been measured, and two new national reactor dosimetry libraries have been produced. The Nuclear Data Section (NDS) of the International Atomic Energy Agency (IAEA) is coordinating the efforts of several specialists in the field of reactor dosimetry in order to prepare a new, updated International Reactor Dosimetry File IRDF-2002. The current status of this work is described and reviewed in this paper.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
947507
Report Number(s):
PNNL-SA-36971
TRN: US0901822
DOE Contract Number:
AC05-76RL01830
Resource Type:
Book
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; REACTORS; DOSIMETRY; IAEA; DATA; TESTING; nuclear data; reactor dosimetry

Citation Formats

Bersillon, O., Greenwood, Lawrence R., Griffin, Patrick J., Mannhart, Wolf, Nolthenius, H. J., Paviotti-Corcuera, Raquel, Zolotarev, K. I., and Zsolnay, Eva M. International Reactor Dosimetry File 2002 (IRDF-2002),Technical Report Series No. 452. United States: N. p., 2006. Web.
Bersillon, O., Greenwood, Lawrence R., Griffin, Patrick J., Mannhart, Wolf, Nolthenius, H. J., Paviotti-Corcuera, Raquel, Zolotarev, K. I., & Zsolnay, Eva M. International Reactor Dosimetry File 2002 (IRDF-2002),Technical Report Series No. 452. United States.
Bersillon, O., Greenwood, Lawrence R., Griffin, Patrick J., Mannhart, Wolf, Nolthenius, H. J., Paviotti-Corcuera, Raquel, Zolotarev, K. I., and Zsolnay, Eva M. Sun . "International Reactor Dosimetry File 2002 (IRDF-2002),Technical Report Series No. 452". United States. doi:.
@article{osti_947507,
title = {International Reactor Dosimetry File 2002 (IRDF-2002),Technical Report Series No. 452},
author = {Bersillon, O. and Greenwood, Lawrence R. and Griffin, Patrick J. and Mannhart, Wolf and Nolthenius, H. J. and Paviotti-Corcuera, Raquel and Zolotarev, K. I. and Zsolnay, Eva M.},
abstractNote = {The last tested version of the reactor dosimetry file IRDF-90 V2 was released in 1993. Since then a large number of new experimental data have been measured, and two new national reactor dosimetry libraries have been produced. The Nuclear Data Section (NDS) of the International Atomic Energy Agency (IAEA) is coordinating the efforts of several specialists in the field of reactor dosimetry in order to prepare a new, updated International Reactor Dosimetry File IRDF-2002. The current status of this work is described and reviewed in this paper.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}

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  • Calculated spectrum-averaged cross sections are presented for all of the reactions in the International Reactor Dosimetry File (IRDF-82) using the ten benchmark neutron fields that were distributed with IRDF-82. Comparisons to experimentally measured spectrum-averaged cross sections are presented for the /sup 252/Cf and /sup 235/U thermal fission spectra. This comparison shows that the difference between the measured and calculated spectrum averages is still much larger than the experimentally quoted uncertainties. This indicates that more precise knowledge of these spectra and further evaluations are still needed.
  • The new IRDF-2002 dosimetry cross-section library was completed by the IAEA in January 2004. A rigorous process was followed in the selection of the recommended dosimetry cross sections. The cross-section selection was followed with a consistency testing. This paper reports on the results of the consistency testing. All candidate selections passed the acceptance testing criteria and the library release is pending. Observations are made on areas that need improvement in the cross sections and in the scope of the consistency testing.
  • The International Reactor Dosimetry File (IRDF)-2002 released in 2004 by the IAEA (see http://www-nds.iaea.org/irdf2002/) contains cross-section data and corresponding uncertainties for 66 dosimetry reactions. New cross-section evaluations have become available recently that re-define some of these dosimetry reactions including: (1) high-fidelity evaluation work undertaken by one of the authors (KIZ); (2) evaluations from the US ENDF/B-VII.0 and candidate evaluations from the US ENDF/B-VII.1 libraries that cover reactions within the International Evaluation of Neutron Cross-Section Standards; (3) European JEFF3.1 library; and (4) Japanese JENDL-4.0 library. Additional high-threshold reactions not included in IRDF-2002 (e.g., {sup 59C}o(n,3n) and {sup 209}Bi(n,3n)) have been alsomore » evaluated to characterize higher-energy neutron fields. Overall, 37 new evaluations of dosimetry reactions have been assessed and intercomparisons made with integral measurements in reference neutron fields to determine whether they should be adopted to update and improve IRDF-2002. Benchmark calculations performed for newly evaluated reactions using the ENDF/B-VII.0 {sup 235}U thermal fission and {sup 252}Cf spontaneous fission neutron spectra show that calculated integral cross sections exhibit improved agreement with evaluated experimental data when compared with the equivalent data from the IRDF-2002 library. Data inconsistencies or deficiencies of new evaluations have been identified for {sup 63}Cu(n,2n), {sup 60}Ni(n,p) {sup 60m+g}Co, {sup 55}Mn(n,{gamma}), and {sup 232}Th(n,f) reactions. Compared with IRDF-2002, the upper neutron energy boundary was formally increased from the actual maximum energy of typically 20 MeV up to 60 MeV by using the TENDL-2010 cross sections and covariance matrices. This extension would allow the updated IRDF library to be also used in fusion dosimetry applications. Uncertainties in the cross sections for all new evaluations are given in the form of relative covariance matrices. Newly evaluated excitation functions should be considered as suitable candidates in the preparation of an improved version of the IRDF that was planned to be released for testing in December 2011. (authors)« less