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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 2 of 2 (0.009 seconds)
1

Isolation and Fate of Sr-90 in a High-Calcium, Post-Detonation Matrices

Herman, Staci 10 June 2019 (has links)
No description available.
Radiation
Strontium
Yttrium
Cherenkov
Radiochemistry
Post-Detonation
Ion Exchange
2

Determination of fission product yields of 235U using gamma ray spectroscopy

Lu, Christopher Hing 05 March 2013 (has links)
It is important to have a method of experimentally calculating fission product yields. Statistical calculations and simulations produce very large uncertainties. Experimental calculations, depending on the methods used, tend to produce lower uncertainties. This work set up a method to calculate fission product yields using gamma ray spectroscopy. In order to produce a method that was theoretically sound, a simulation was set up using OrigenArp to calculate theoretical concentrations of fission products from the irradiation of natural uranium. From these concentrations, the fission product yields were calculated to verify that they would agree with expected values. Moving forward in the work, the total flux at the point of irradiation, in the pneumatic transfer system, was calculated and determined to be 3.9070E+11 ± 6.9570E+10 n/cm^2/s at 100 kW. Once the flux was calculated, the method for calculating fission product yields was implemented and yields were calculated for 10 fission products. The yields calculated were in very good agreement (within 10.04%) with expected values taken from the ENDF-349 library. This method has strong potential in nuclear forensics as it can provide a means for developing a library of experimentally-determined fission product yields, as well as rapid post-nuclear detonation analysis. / text
Fission product yield
Fission product
Gamma ray spectroscopy
Nuclear forensics
Post detonation analysis
Nuclear engineering
NETL
Nuclear Engineering Teaching Laboratory
TRIGA
Irradiation
Uranium
High-purity germanium
Detector
Efficiency
Flux
Origen
MCNP
Maple

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