12C(,pn) photon asymmetry for Eγ=180–340 MeV

Franczuk, S. et al. (1999) 12C(,pn) photon asymmetry for Eγ=180–340 MeV. Physics Letters B, 450(4), pp. 332-338. (doi: 10.1016/S0370-2693(99)00184-7)

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The photon asymmetry (Σ) of the <sup>12</sup>C(,pn) reaction has been measured using linearly polarised tagged photons at the Mainz microtron MAMI for Eγ=180–340 MeV. The data have been analysed in separate missing energy (Em) regions corresponding to the ejection of nucleons from (1p)2 and (1p)(1s) shells. The measured Σ values for both Em regions are smaller in magnitude than corresponding 2H data, but the (1p)2 results have a similar Eγ dependence. Calculations of direct two-nucleon emission overestimate the magnitude of Σ at all photon energies.

Item Type:Articles
Glasgow Author(s) Enlighten ID:McGeorge, Dr John and MacGregor, Professor Douglas and Branford, Prof Derek and Livingston, Dr Kenneth and Owens, Professor Robert and Ireland, Professor David and Annand, Dr John and Kellie, Dr James
Authors: Franczuk, S., MacGregor, I.J.D., Ahrens, J., Annand, J.R.M., Arneil, J.F., Beck, R., Branford, D., Grabmayr, P., Hall, S.J., Hehl, T., Harty, P.D., Ireland, D.G., Kellie, J.D., Livingston, K., McGeorge, J.C., Natter, F.A., Oberkirsch, S., Owens, R.O., Powrie, C.J.Y., Ryckebusch, J., Sauer, M., Settele, A., and Watts, D.P.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Nuclear Physics
Journal Name:Physics Letters B
Journal Abbr.:Phys. Lett. B
Publisher:Elsevier BV
ISSN (Online):1873-2445
Copyright Holders:Elsevier Science B.V.

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