Measurements of the ²³⁸U capture cross section and self-indication ratio for incident neutron energies from 5 eV to 10 keV

Author

Jing-Tong Yang

Date of Award

3-1982

Degree Type

Dissertation

Degree Name

Doctor of Philosophy

Major

Nuclear Engineering

Major Professor

Rafael B. Perez

Committee Members

G. de Saussure, J. Munoz Cobos, J. H. Todd, R. L. Shannon

Abstract

The Oak Ridge Electron Linear Accelerator (ORELA) was utilized as the pulsed neutron source for measurements of the ²³⁸U neutron capture cross section and self-indication ratio by the time-of-flight technique. Capture gamma rays were detected by four non-hydrogenous (C₆F₆) scintillation detectors. The incident neutron flux was monitored by a ¹⁰BF₃ ionization chamber. The cross section was normalized by the saturated resonance technique.

Extensive tests of the pulse-height weighting technique for total energy detector (TED) were performed to validate the experimental results.

The experimental results were compared with theoretical computations of the capture yield and self-indication ratio based on the neutron resonance parameters prescribed by the ENDF/B-V evaluation. It was found that the neutron capture yield and self-indication ratio measurements performed in this work validate the results of the ENDF/B-V evaluation within the bounds of the experimental uncertainties.

Recommended Citation

Yang, Jing-Tong, "Measurements of the ²³⁸U capture cross section and self-indication ratio for incident neutron energies from 5 eV to 10 keV. " PhD diss., University of Tennessee, 1982.
https://trace.tennessee.edu/utk_graddiss/13357