MacGregor, I.J.D. et al. (1998) Mechanisms in the 12C(γ,pn) and (γ,pp)reactions. Physical Review Letters, 80(2), pp. 245-248. (doi: 10.1103/PhysRevLett.80.245)
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Abstract
<sup>12</sup>C(gamma,pn) and (gamma,pp) cross sections have been measured in kinematics which emphasize direct 2N knockout for E(gamma) = 120 - 400 MeV and theta(p) = 23 - 152 deg. The cross sections for both reactions peak strongly in the Delta-resonance region. Theoretical calculations that account for the medium dependence of the Delta propagator predict a similar photon energy dependence to the data and describe the general trends of the measured (gamma,pp)/(gamma,pn) ratio. Both cross sections show strong angular dependence, and the large differences between the two channels indicate different microscopic reaction mechanisms.
| Item Type: | Articles (Letter) |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | McGeorge, Dr John and MacGregor, Professor Douglas and Owens, Professor Robert and Annand, Dr John and Kellie, Dr James |
| Authors: | MacGregor, I.J.D., Yau, T.T.H., Ahrens, J., Annand, J.R.M., Beck, R., Branford, D., Grabmayr, P., Hall, S.J., Harty, P.D., Hehl, T., Kellie, J.D., Lamparter, T., Liang, M., MacKenzie, J.A., McAllister, S., McGeorge, J.C., Owens, R.O., Ryckebusch, J., Sauer, M., Schneider, R., 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: | Physical Review Letters |
| Journal Abbr.: | Phys. Rev. Lett. |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
| Copyright Holders: | American Physical Society |
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