Low energy neutron-proton interactions
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2012.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2013
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| Online Access: | http://hdl.handle.net/1721.1/76978 |
| _version_ | 1811086053345329152 |
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| author | Daub, Brian (Brian Hollenberg) |
| author2 | June L. Matthews. |
| author_facet | June L. Matthews. Daub, Brian (Brian Hollenberg) |
| author_sort | Daub, Brian (Brian Hollenberg) |
| collection | MIT |
| description | Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2012. |
| first_indexed | 2024-09-23T13:20:09Z |
| format | Thesis |
| id | mit-1721.1/76978 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T13:20:09Z |
| publishDate | 2013 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/769782019-04-12T09:45:14Z Low energy neutron-proton interactions Daub, Brian (Brian Hollenberg) June L. Matthews. Massachusetts Institute of Technology. Dept. of Physics. Massachusetts Institute of Technology. Dept. of Physics. Physics. Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2012. Cataloged from PDF version of thesis. Includes bibliographical references (p. 265-270). There have been few measurements of cross sections for neutron-proton scattering and radiative capture below 1 MeV. Those measurements which do exist are at a small number of energies and are often inconsistent with theoretical models and with each other. We have conducted several experiments with the goal of obtaining improved data on these cross sections at the University of Kentucky (UKY) and the Los Alamos Neutron Science Center (LANSCE). Feasibility studies for measuring the low energy cross section for np radiative capture have been conducted at both UKY and LANSCE, culminating in a measurement of the cross section at 0.5, 0.9, 1.5, 2.0, and 2.5 MeV at UKY, using a plastic scintillator to detect recoiling deuterons and two BGO scintillators to detect the [gamma]-ray yields at 64.6° and 106.6°. We also performed measurements of the response of BC418 plastic scintillator to low energy protons during these studies, and conducted several additional measurements of the scintillator response at LANSCE and UKY, yielding very precise results from 100 keV to 3.6 MeV. The total cross section for np scattering was measured at UKY from 150 to 800 keV by neutron transmission, measuring the neutron yields in a liquid scintillator with various targets in the beam. The cross section was determined by taking ratios of neutron yields with and without the target, giving cross sections which are independent of detector efficiency and dead time. These results fill a significant gap in the available data below 500 keV. by Brian Daub. Ph.D. 2013-02-14T15:34:28Z 2013-02-14T15:34:28Z 2012 2012 Thesis http://hdl.handle.net/1721.1/76978 824936305 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 270 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. Daub, Brian (Brian Hollenberg) Low energy neutron-proton interactions |
| title | Low energy neutron-proton interactions |
| title_full | Low energy neutron-proton interactions |
| title_fullStr | Low energy neutron-proton interactions |
| title_full_unstemmed | Low energy neutron-proton interactions |
| title_short | Low energy neutron-proton interactions |
| title_sort | low energy neutron proton interactions |
| topic | Physics. |
| url | http://hdl.handle.net/1721.1/76978 |
| work_keys_str_mv | AT daubbrianbrianhollenberg lowenergyneutronprotoninteractions |