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Measurements of the HEU and LEU in-core spectra at the Ford Nuclear Reactor

Abstract

The Ford Nuclear Reactor (FNR) at the University of Michigan has been serving as the test site for a low-enriched uranium (LEU) fuel whole-core demonstration. As part of the experimental program, the differential neutron spectrum has been measured in a high-enriched uranium (HEU) core and an LEU core. The HEU and LEU spectra were determined by unfolding the measured activities of foils that were irradiated in the reactor. When the HEU and LEU spectra are compared from meV to 10 MeV, significant differences between the two spectra are apparent below 10 eV. These are probably caused by the additional {sup 238}U resonance absorption in the LEU fuel. No measurable difference occurs in the shape of the spectra above MeV. (author)
Authors:
Wehe, D K; [1]  King, J S; Lee, J C; Martin, W R [2] 
  1. Oak Ridge National Laboratory, Oak Ridge, TN (United States)
  2. Department of Nuclear Engineering, University of Michigan, Ann Arbor, MI (United States)
Publication Date:
Jul 01, 1985
Product Type:
Conference
Report Number:
ANL/RERTR/TM-6; CONF-8410173; INIS-XA-C-019
Resource Relation:
Conference: 1984 international meeting on Reduced Enrichment for Research and Test Reactors, Argonne, IL (United States), 15-18 Oct 1984; Other Information: 7 refs, 6 figs, 2 tabs; PBD: Jul 1985; Related Information: In: Proceedings of the 1984 international meeting on Reduced Enrichment for Research and Test Reactors. Base technology, 529 pages.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; COMPARATIVE EVALUATIONS; EXPERIMENTAL DATA; FNR REACTOR; HIGHLY ENRICHED URANIUM; NEUTRON FLUX; NEUTRON SPECTRA; REACTOR CORES; RESONANCE ABSORPTION; SLIGHTLY ENRICHED URANIUM; SPECTRA UNFOLDING
Sponsoring Organizations:
U.S. Department of Energy, Assistant Secretary for Nuclear Energy, Office of Spent Fuel Management and Reprocessing Systems (United States)
OSTI ID:
20571761
Research Organizations:
Argonne National Laboratory, Argonne, IL (United States)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
TRN: XA04C1466023768
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
page(s) 201-210
Announcement Date:
Mar 20, 2005

Citation Formats

Wehe, D K, King, J S, Lee, J C, and Martin, W R. Measurements of the HEU and LEU in-core spectra at the Ford Nuclear Reactor. IAEA: N. p., 1985. Web.
Wehe, D K, King, J S, Lee, J C, & Martin, W R. Measurements of the HEU and LEU in-core spectra at the Ford Nuclear Reactor. IAEA.
Wehe, D K, King, J S, Lee, J C, and Martin, W R. 1985. "Measurements of the HEU and LEU in-core spectra at the Ford Nuclear Reactor." IAEA.
@misc{etde_20571761,
title = {Measurements of the HEU and LEU in-core spectra at the Ford Nuclear Reactor}
author = {Wehe, D K, King, J S, Lee, J C, and Martin, W R}
abstractNote = {The Ford Nuclear Reactor (FNR) at the University of Michigan has been serving as the test site for a low-enriched uranium (LEU) fuel whole-core demonstration. As part of the experimental program, the differential neutron spectrum has been measured in a high-enriched uranium (HEU) core and an LEU core. The HEU and LEU spectra were determined by unfolding the measured activities of foils that were irradiated in the reactor. When the HEU and LEU spectra are compared from meV to 10 MeV, significant differences between the two spectra are apparent below 10 eV. These are probably caused by the additional {sup 238}U resonance absorption in the LEU fuel. No measurable difference occurs in the shape of the spectra above MeV. (author)}
place = {IAEA}
year = {1985}
month = {Jul}
}