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Search Publications by: Allan D. Carlson (Assoc)

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Displaying 1 - 25 of 34

Recent Work Leading Toward a New Evaluation of Neutron Standards

December 8, 2014
Author(s)
Allan D. Carlson, V G. Pronyaev, R. Capote, G M. Hale, F. J. Hambsch, T Kawano, S. Kunieda, W Mannhart, R O. Nelson, D. Neudecker, P Schillebeeckx, S Simakov, P Talou, X Tao, D. L. Smith, W Wang, A. Wallner
A number of national cross section libraries are planning new versions of their libraries including ENDF/B and JEFF. The first step in producing these new libraries is evaluating the neutron standards. A new evaluation of the standards is now underway

Toward a New Evaluation of the Neutron Standards

December 6, 2014
Author(s)
Allan D. Carlson, V G. Pronyaev, R. Capote, G M. Hale, F. J. Hambsch, T Kawano, S. Kunieda, R O. Nelson, D. Neudecker, P Schillebeeckx, S Simakov, D L. Smith, X Talou, A Wallner, W Wang
A new version of the ENDF/B library has been planned. The first step in producing this new library is evaluating the neutron standards. An evaluation is now underway with support from a Data Development Project of the IAEA. In addition to the neutron cross

New Methods for Measurement of Neutron Detector Efficiency up to 20 MeV

December 1, 2014
Author(s)
Fred B. Bateman, Allan D. Carlson, N. A. Kornilov, S M. Grimes, T N. Massey, C E. Brient, D E. Carter, J E. O'Donnell, R. C. Haight, N Boukharouba
A new approach to neutron detector effciency has been taken. A neutron detector has been calibrated with a Cf-252 source at low energy. The calibration was extended to higher neutron energies by use of symetric reactions such as A + A ! (2A - 1) + n:

Improvements and Extensions of the Neutron Cross Section and Fluence Standards

April 4, 2014
Author(s)
Allan D. Carlson, V G. Pronyaev, R. Capote, F. J. Hambsch, F. Kappeler, C. Lederer, A Mengoni, R O. Nelson, A.J.M Plompen, P Schillebeeckx, S Simakov, S. Tagesen, H Vonach, A Vorobyev, A Wallner
Updated evaluations of the standards are needed within a few years for new versions of several cross section libraries, e.g.; ENDF/B and JEFF, that have been planned. To update the standards, a collaboration, supported by an IAEA Data Development Project

The neutron cross section standards, evaluations and applications

October 28, 2011
Author(s)
Allan D. Carlson
The measurement of a neutron cross section can be simplified if it is measured relative to a neutron cross section standard. Then it is not necessary to measure the neutron fluence. The standards in effect provide determinations of the neutron fluence

A New International Evaluation of the Neutron Cross Section Standards

October 16, 2008
Author(s)
Allan D. Carlson
The measurements of most neutron cross sections are made relative to neutron cross section standards. The last complete evaluation ofthe standards, which was for ENDF/B-VI, took place almost 15 years ago. The cross section standards produced for the ENDF/B

ENDF/B VII.0: Next Generation Evaluated Nuclear Data Library for Nuclear Science and Technology

January 1, 2006
Author(s)
M B. Chadwick, P Oblozinsky, M Herman, N M. Greene, R D. Mcknight, D L. Smith, P G. Young, R E. Macfarlane, G M. Hale, S C. Frankle, A C. Kahler, T Kawano, R C. Little, D G. Madland, P Moller, R D. Mosteller, P R. Page, P Talou, H Trellue, M C. White, W B. Wilson, R Arcilla, C L. Dunford, S F. Mughabghab, B Pritychenko, D Rochman, A A. Sonzogni, C R. Lubitz, T H. Trumbull, J P. Weinman, D A. Brown, D E. Cullen, D P. Heinrichs, D P. Mcnabb, H Derrien, M E. Dunn, N M. Larson, L C. Leal, Allan D. Carlson, R C. Block, J M. Briggs, E T. Cheng, H C. Huria, M L. Zerkle, K S. Kozier, A Courcelle, V Pronyaev, S C. Marck

Final Report of WPEC Subgroup 7

January 1, 2006
Author(s)
S Tagesen, H Vonach, F J. Hambsch, Z Chen, H M. Hofmann, K Shibata, S Y. Oh, S A. Badikov, E V. Gai, V G. Pronyaev, D L. Smith, G M. Hale, T Kawano, Allan D. Carlson, N M. Larson

A New Investigation of Iron Cross Sections via Spherical-Shell Transmission Measurements and particle Transport Calculations

August 1, 2002
Author(s)
J M. Adams, A Alpan, Allan D. Carlson, S Gardner, S M. Grimes, A Haghighat, V Kucukboyaci, T N. Massey, A Patchimpattapong, M T. Wenner
We are engaged in a multi-year project to study neutron scattering interactions in iron, the principal objective of which is to investigate the well-known deficiency that exists in reactor pressure vessel neutron fluence determinations. Specifically, we