The absolute cross section of the reaction D(p,ɣ)³He has been measured in the energy range from 400 Kev to 1100 Kev in the laboratory system. A target of deuterated polyethylene was used to measure the relative yield of the reaction over this range, and the results were normalized
to an absolute measurement made with a deuterium gas target.
The reaction is of interest because it enables some information to be obtained about the forces binding three nucleons together. It also has some significance in a number of astrophysical processes.
In order to determine the cross section, the intrinsic efficiency of a 5 inch by 4 inch sodium iodide crystal scintillation counter was measured
by simultaneous alpha particle and gamma ray counting on the 340 Kev resonance of the reaction ¹⁹F(p,[symbol omitted]ɣ)¹⁶0. The intrinsic efficiency of the detector
was found to be .679 ± .03 for the 6.14 Mev gamma rays from this reaction, with the particular geometry used.
The absolute cross section for the reaction D(p ɣ)³He was found by the gas target measurement to be 2.33 ± .07 microbarns for an incident proton energy of 643 kev. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/35375 |
| Date | January 1969 |
| Creators | Helmer, Richard Lloyd |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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