Electron-and photon-induced proton knockout from 209Bi

Branford, D. et al. (2001) Electron-and photon-induced proton knockout from 209Bi. Physical Review C, 63(1), 014310. (doi: 10.1103/PhysRevC.63.014310)

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Cross sections have been measured for the 209 Bi ( e , e ′ p ) 208 Pb and 209 Bi ( γ , p ) 208 Pb reactions using electrons at E e = 293 and 412 MeV, and tagged photons at mean E γ ∼ 43.7 and ∼ 52.0 MeV, respectively. The 209 Bi ( e , e ′ p ) 208 Pb results are compared to complete distorted wave impulse approximation calculations, from which it is deduced that a model of 209 Bi based on a 1 h 9 / 2 proton orbiting an inert 208 Pb core has a high degree of validity. The interpretation of the 209 Bi ( γ , p ) 208 Pb results makes use of the ( e , e ′ p ) results to constrain the calculation of the direct knockout contribution. Using this approach, a comparison of the 209 Bi ( γ , p ) 208 Pb data to various calculations with and without meson exchange contributions shows that the enhancement of the ( γ , p ) cross section due to meson exchange is small. This is in contrast to results obtained for light nuclei, but in agreement with results for heavier nuclei.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Branford, Prof Derek and Ireland, Professor David
Authors: Branford, D., Rauf, A.W., Lac, J., Adler, J.O., Davinson, T., Ireland, D.G., de Jager, C.W., Liang, M., Kasdorp, W.J., Lapikas, L., Nilsson, B., Ruijter, H., Ryckbosch, D., Sandell, A., Schroder, B., Shotter, A.C., van der Steenhoven, G., Van de Vyver, R., and Woods, P.J.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review C
Publisher:American Physical Society
ISSN (Online):1089-490X
Published Online:18 December 2000

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