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dc.rights.licenseRestricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.
dc.contributorDanon, Yaron
dc.contributorLiu, Li (Emily)
dc.contributorJi, Wei
dc.contributorNapolitano, Jim
dc.contributorBarry, Devin
dc.contributor.authorBlain, Ezekiel
dc.date.accessioned2021-11-03T08:17:54Z
dc.date.available2021-11-03T08:17:54Z
dc.date.created2015-03-09T10:43:58Z
dc.date.issued2014-12
dc.identifier.urihttps://hdl.handle.net/20.500.13015/1289
dc.descriptionDecember 2014
dc.descriptionSchool of Engineering
dc.description.abstractCurrent uncertainties in the prompt fission neutron spectrum have a significant effect of up to 4% on keff for reactor criticality and safety calculations. Therefore, a method was developed at RPI to improve the accuracy of the measurement of the prompt fission neutron spectrum. This method involves using an array of BaF2 gamma detectors to tag that a fission event has occurred, and a double time-of-flight setup to obtain the prompt fission neutron spectrum as a function of incident neutron energy. The gamma tagging method improves upon conventional fission chambers by allowing for much larger sample sizes to be utilized while not suffering from effects of discriminator level on the shape of the prompt fission neutron spectrum. A coincidence requirement on an array of 4 BaF2 gamma detectors is used to determine the timing of the fission event. Furthermore, a method is under development for the use of thin plastic scintillators for measurement of the prompt fission neutron spectrum with low energies. Measurements with spontaneous fission of 252Cf show good agreement with previous datasets and current evaluations as well as providing accurate data down to 50 keV with the plastic scintillator detector. Preliminary incident neutron beam analysis was performed with 238U and shows good agreement with the current evaluations demonstrating the feasibility of the gamma tagging method for in beam prompt fission neutron spectrum measurements of various isotopes.
dc.language.isoENG
dc.publisherRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofRensselaer Theses and Dissertations Online Collection
dc.subjectNuclear engineering and science
dc.titleMeasurement of prompt fission neutron spectrum using a gamma tag double time-of-flight setup
dc.typeElectronic thesis
dc.typeThesis
dc.digitool.pid174745
dc.digitool.pid174746
dc.digitool.pid174747
dc.rights.holderThis electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
dc.description.degreePhD
dc.relation.departmentDept. of Mechanical, Aerospace, and Nuclear Engineering


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