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Dual neutral particle induced transmutation


Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/20845

Dual neutral particle induced transmutation

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dc.contributor.author Martin, William
dc.date.accessioned 2012-07-05T19:39:29Z
dc.date.available 2012-07-05T19:39:29Z
dc.date.issued 2012-07-05
dc.date.submitted May 2012
dc.identifier.uri http://hdl.handle.net/1928/20845
dc.description.abstract Although nuclear transmutation methods have been around for decades, they all focus solely on neutron induced reactions. Recent novel concepts have sought to use neutrons as well as photons for active interrogation of cargo to detect the smuggling of highly enriched uranium -- a concept that would require modeling of the transmutation caused by both neutrons and photons. As photonuclear transmutation has yet to be modeled, new methods need to be developed. The CINDER2008 nuclear transmutation code from Los Alamos National Laboratory is extended from neutron only applications to dual particle applications specifically for this modeling. To couple these calculations to a dual particle transport for the determination of reaction rates, both deterministic and Monte Carlo methods are used. By doing this through a single code, TINDER (Transport-coupled CINDER), transport and transmutation calculations can be completed with no human interaction after the start of the calculation, cutting down on the uncertainties and errors that come with human manipulation of data. A necessary verification and validation of these methods has taken place, especially in terms of the photonuclear data, which is sparse or non-existent in some cases. This has proven any data translations and uses are appropriate and correct and the code has been modified correctly. A final demonstration has been performed based on the intended use of this code, active interrogation of nuclear cargo. These results match to within a few percent of experimental data and the extension to dual particles can bolster the output signal by over 15%. As transport methods come at a cost, a sensitivity analysis has been performed to see the effect of variations in the flux on the final output. These results show that although the output beta-delayed photon spectrum is sensitive to the input flux, the results are still on the correct order for practical purposes. en_US
dc.language.iso en_US en_US
dc.subject Transmutation en_US
dc.subject CINDER en_US
dc.subject Dual Particle en_US
dc.subject Nuclear Engineering en_US
dc.subject.lcsh Photonuclear reactions--Mathematical models.
dc.subject.lcsh Photon transport theory--Mathematical models.
dc.subject.lcsh Duality (Nuclear physics)--Mathematical models.
dc.subject.lcsh Nuclear counters.
dc.subject.lcsh Containerization--Security measures.
dc.title Dual neutral particle induced transmutation en_US
dc.type Dissertation en_US
dc.description.degree Engineering en_US
dc.description.level Doctoral en_US
dc.description.department University of New Mexico. Dept. of Chemical and Nuclear Engineering en_US
dc.description.advisor De Oliveira, Cassiano
dc.description.committee-member Arthur, Edward
dc.description.committee-member Prinja, Anil
dc.description.committee-member Coutsias, Evangelos
dc.description.committee-member Hecht, Adam

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