Experimental Studies of the Mechanism of Photon Absorption on Light Nuclei
dc.contributor.author
Morrow, Steven A
en
dc.date.accessioned
2007-06-27T14:56:46Z
dc.date.available
2007-06-27T14:56:46Z
dc.date.issued
2000
dc.description.abstract
A measurement of the reaction 12 C (γ,p γ') has been made with tagged
photons in the range 49.47<Eγ <70.24 MeV. The relative population of a triplet of
states, (7/2-,1/2+ ,5/2+ ) at Eex ~7 MeV in the residual nucleus 11B, following the
reaction 12 C (γ,p) has been made by directly resolving their de--excitation γ-ray
decay to the ground state of 11B. This measurement constitutes the highest resolution ever achieved in determining the excitation function of the residual nucleus
after a (γ,p) reaction (~48 keV FWHM at Eex ~7 MeV). Comparison has been
made with the data of Kuzin et al., who also measured the relative populations,
with a resolution of ~270 keV at Eex ~7 MeV. The 7/2-,state at 6.74 MeV has
been observed to be the most strongly excited state of the triplet in agreement
with Kuzin et al. Disagreement has been found for the relative strengths of the
1/2 + and 5/2 + states in the triplet. An estimation of the maximum effect of angular correlations, between the ejected proton and de-excitation γ-ray, has been
included in the analysis. This effect increases the disagreement between the 2
measurements.
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dc.format.extent
7835745 bytes
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dc.format.extent
56231264 bytes
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dc.format.mimetype
application/pdf
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dc.format.mimetype
application/postscript
en
dc.identifier.uri
http://hdl.handle.net/1842/1782
dc.language.iso
en
dc.subject
nuclear physics
en
dc.subject
physics
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dc.title
Experimental Studies of the Mechanism of Photon Absorption on Light Nuclei
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dc.type
Thesis or Dissertation
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dc.type.qualificationlevel
Doctoral
en
dc.type.qualificationname
PhD Doctor of Philosophy
en
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