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Title: Influence of nuclear data uncertainties on thorium fusion-fission hybrid blanket nucleonic performance

Abstract

The fusion-fission hybrid blanket proposed for the Tandem Mirror Hybrid Reactor employs thorium metal as the fertile material. Based on the ENDF/B-IV nuclear data, the /sup 233/U and tritium production rate and blanket energy multiplication averaged over the blanket lifetime of about 9 MW-yr/m/sup 2/ are 0.76 and 1.12 per D-T neutron and 4.8, respectively. At the time of the blanket discharge, the /sup 233/U enrichment in the thorium metal is about 3%. The thorium cross sections given by the ENDF/B-IV and V were reviewed, and the important partial cross sections such as (n,2n), (n,3n), and (n,..gamma..) were found to be known to +-10 to 20% in the respective energy range of interest. A sensitivity study showed that the /sup 233/U and tritium production rate and blanket energy multiplication are relatively sensitive to the thorium capture and fission cross section uncertainties. In order to predict the above parameters within +-1%, the Th(n,..gamma..) and Th(n,..nu..f) cross sections must be measured within about +-2% in the energy range 3 to 3000 keV and 13.5 to 15 MeV, respectively.

Authors:
;
Publication Date:
Research Org.:
General Atomic Co., San Diego, CA (USA)
OSTI Identifier:
5769074
Report Number(s):
GA-A-15594; CONF-791058-2
TRN: 79-023017
DOE Contract Number:  
AT03-76ET51011
Resource Type:
Conference
Resource Relation:
Conference: International conference on nuclear cross sections for technology, Knoxville, TN, USA, 22 Oct 1979
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; HYBRID REACTORS; NEUTRON REACTIONS; TMR REACTORS; BREEDING BLANKETS; CROSS SECTIONS; THORIUM 232; THORIUM CYCLE; URANIUM 233; ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYON REACTIONS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FUEL CYCLE; HADRON REACTIONS; HEAVY NUCLEI; ISOTOPES; MAGNETIC MIRROR TYPE REACTORS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; RADIOISOTOPES; REACTOR COMPONENTS; THERMONUCLEAR REACTORS; THORIUM ISOTOPES; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES; 700201* - Fusion Power Plant Technology- Blanket Engineering

Citation Formats

Cheng, E.T., and Mathews, D.R. Influence of nuclear data uncertainties on thorium fusion-fission hybrid blanket nucleonic performance. United States: N. p., 1979. Web.
Cheng, E.T., & Mathews, D.R. Influence of nuclear data uncertainties on thorium fusion-fission hybrid blanket nucleonic performance. United States.
Cheng, E.T., and Mathews, D.R. Sat . "Influence of nuclear data uncertainties on thorium fusion-fission hybrid blanket nucleonic performance". United States. https://www.osti.gov/servlets/purl/5769074.
@article{osti_5769074,
title = {Influence of nuclear data uncertainties on thorium fusion-fission hybrid blanket nucleonic performance},
author = {Cheng, E.T. and Mathews, D.R.},
abstractNote = {The fusion-fission hybrid blanket proposed for the Tandem Mirror Hybrid Reactor employs thorium metal as the fertile material. Based on the ENDF/B-IV nuclear data, the /sup 233/U and tritium production rate and blanket energy multiplication averaged over the blanket lifetime of about 9 MW-yr/m/sup 2/ are 0.76 and 1.12 per D-T neutron and 4.8, respectively. At the time of the blanket discharge, the /sup 233/U enrichment in the thorium metal is about 3%. The thorium cross sections given by the ENDF/B-IV and V were reviewed, and the important partial cross sections such as (n,2n), (n,3n), and (n,..gamma..) were found to be known to +-10 to 20% in the respective energy range of interest. A sensitivity study showed that the /sup 233/U and tritium production rate and blanket energy multiplication are relatively sensitive to the thorium capture and fission cross section uncertainties. In order to predict the above parameters within +-1%, the Th(n,..gamma..) and Th(n,..nu..f) cross sections must be measured within about +-2% in the energy range 3 to 3000 keV and 13.5 to 15 MeV, respectively.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Sep 01 00:00:00 EDT 1979},
month = {Sat Sep 01 00:00:00 EDT 1979}
}

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