Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for +publisher:"Georgia Tech" +contributor:("McElroy, Robert D."). One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters

1. Mickum, George S. Development of a dedicated hybrid K-edge densitometer for pyroprocessing safeguards measurements using Monte Carlo simulation models.

Degree: PhD, Mechanical Engineering, 2015, Georgia Tech

Pyroprocessing is an electrochemical method for recovering actinides from used nuclear fuel and recycling them into fresh nuclear fuel. It is posited herein that proposed safeguards approaches on pyroprocessing for nuclear material control and accountability face several challenges due to the unproven plutonium-curium inseparability argument and the limitations of neutron counters. Thus, the Hybrid K-Edge Densitometer is currently being investigated as an assay tool for the measurement of pyroprocessing materials in order to perform effective safeguards. This work details the development of a computational model created using the Monte Carlo N-Particle code to reproduce HKED assay of samples expected from the pyroprocesses. The model incorporates detailed geometrical dimensions of the Oak Ridge National Laboratory HKED system, realistic detector pulse height spectral responses, optimum computational efficiency, and optimization capabilities. The model has been validated on experimental data representative of samples from traditional reprocessing solutions and then extended to the sample matrices and actinide concentrations of pyroprocessing. Data analysis algorithms were created in order to account for unsimulated spectral characteristics and correct inaccuracies in the simulated results. The realistic assay results obtained with the model have provided insight into the extension of the HKED technique to pyroprocessing safeguards and reduced the calibration and validation efforts in support of that design study. Application of the model has allowed for a detailed determination of the volume of the sample being actively irradiated as well as provided a basis for determining the matrix effects from the pyroprocessing salts on the HKED assay spectra. Advisors/Committee Members: Hertel, Nolan E. (advisor), Erickson, Anna (committee member), Deo, Chaitanya (committee member), DuBose, Franklin (committee member), Stulberg, Adam (committee member), McElroy, Robert D. (committee member).

Subjects/Keywords: Hybrid k-edge densitometer; Pyroprocessing; Nuclear safeguards; X-ray fluorescence; K-edge densitometry; Monte Carlo simulation; Detector response; K-edge vacancy production; Optimization for pyroprocessing

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Mickum, G. S. (2015). Development of a dedicated hybrid K-edge densitometer for pyroprocessing safeguards measurements using Monte Carlo simulation models. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/54358

Chicago Manual of Style (16th Edition):

Mickum, George S. “Development of a dedicated hybrid K-edge densitometer for pyroprocessing safeguards measurements using Monte Carlo simulation models.” 2015. Doctoral Dissertation, Georgia Tech. Accessed March 20, 2019. http://hdl.handle.net/1853/54358.

MLA Handbook (7th Edition):

Mickum, George S. “Development of a dedicated hybrid K-edge densitometer for pyroprocessing safeguards measurements using Monte Carlo simulation models.” 2015. Web. 20 Mar 2019.

Vancouver:

Mickum GS. Development of a dedicated hybrid K-edge densitometer for pyroprocessing safeguards measurements using Monte Carlo simulation models. [Internet] [Doctoral dissertation]. Georgia Tech; 2015. [cited 2019 Mar 20]. Available from: http://hdl.handle.net/1853/54358.

Council of Science Editors:

Mickum GS. Development of a dedicated hybrid K-edge densitometer for pyroprocessing safeguards measurements using Monte Carlo simulation models. [Doctoral Dissertation]. Georgia Tech; 2015. Available from: http://hdl.handle.net/1853/54358

.