Doran, S.M. et al. (1993) The 4He(gamma,2N) reaction measured with tagged photons. Nuclear Physics A, 559(3), pp. 347-367. (doi: 10.1016/0375-9474(93)90158-T)
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Abstract
The results of tagged-photon measurements of the 4He(γ, pn)d, 4He(γ, pn)pn and 4He(γ, pp)nn reactions, carried out with photons of energies 80–131 MeV, are presented. The (γ, pn)d three-body-breakup cross section dominates the four-body-breakup cross section. The three-body-breakup cross section and the corresponding deuteron recoil-momentum spectrum are reasonably accounted for by a mechanism of photon absorption on correlated proton-neutron pairs. In contrast the four-body-breakup mechanism appears to have two components: absorption on correlated proton-neutron pairs and a more complex additional component which has a distribution similar to phase space. The data rule out substantial photon absorption on proton-proton pairs.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Anthony, Dr Ian and McGeorge, Dr John and MacGregor, Professor Douglas and Owens, Professor Robert and Annand, Dr John and Kellie, Dr James |
| Authors: | Doran, S.M., MacGregor, I.J.D., Annand, J.R.M., Anthony, I., Dancer, S.N., Hall, S.J., Kellie, J.D., McGeorge, J.C., Miller, G.J., Owens, R.O., Wallace, P.A., Schoch, B., Schmieden, H., and Klein, S. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Nuclear Physics A |
| ISSN: | 0375-9474 |
| ISSN (Online): | 1873-1554 |
| Copyright Holders: | Elsevier Science Publishers BV |
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