Delayed neutrons from the neutron irradiation of ²³⁵U
MetadataShow full item record
A series of experiments was performed with the Texas A&M University Nuclear Science Center Reactor (NSCR) to verify ²³⁵U delayed neutron emission rates. A custom device was created to accurately measure a sample's pneumatic flight time and the Nuclear Science Center's (NSC's) pneumatic transfer system (PTS) was redesigned to reduce a sample's pneumatic flight time from over 1,600 milliseconds to less than 450 milliseconds. Four saturation irradiations were performed at reactor powers of 100 and 200 kW for 300 seconds and one burst irradiation was performed using a $1.61 pulse producing 19.11 MW-s of energy. Experimental results agreed extremely well with those of Keepin. By comparing the first ten seconds of collected data, the first saturation irradiation deviated ~1.869% with a dead time of 2 microseconds, while the burst irradiation deviated ~0.303% with a dead time of 5 microseconds. Saturation irradiations one, three and four were normalized to the initial count rate of saturation irradiation two to determine the system reproducibility, and deviated ~0.449%, ~0.343% and ~0.389%, respectively.
SubjectFlight Time Sensor
Delayed Neutron Precursors
Nuclear Science Center
Pneumatic Transfer System
Nuclear Science Center Reactor
Heinrich, Aaron David (2008). Delayed neutrons from the neutron irradiation of ²³⁵U. Master's thesis, Texas A&M University. Texas A&M University. Available electronically from
Showing items related by title, author, creator and subject.
Stephenson, S. E (Texas A&M University, 1961)Not available
Development of a portable neutron coincidence counter for field measurements of nuclear materials using the advanced multiplicity capabilities of MCNPX 2.5.F and the neutron coincidence point model Thornton, Angela Lynn (2009-05-15)Neutron coincidence counting is an important passive Nondestructive Assay (NDA) technique widely used for qualitative and quantitative analysis of nuclear material in bulk samples. During the fission process, multiple ...
Scipolo, Vittorio (Texas A&M University, 2005-11-01)Tomography refers to the cross-sectional imaging of an object from either transmission or reflection data collected by illuminating the object from many different directions. Classical tomography fails to reconstruct the ...