Robinson, J. et al. (2013) Measurements of 12C(→γ,pp) photon asymmetries for Eγ= 200–450 MeV. European Physical Journal A, 49(65), (doi: 10.1140/epja/i2013-13065-0)
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Abstract
The 12C (→γ ,pp) reaction has been studied in the photon energy range 200-450 MeV at the Mainz microtron MAMI-C, where linearly polarised photons were energy-tagged using the Glasgow-Mainz Tagged Photon Spectrometer and protons were detected in the Crystal Ball detector. The photon asymmetry Σ has been measured over a wider Eγ range than previous measurements. The strongest asymmetries were found at low missing energies where direct emission of nucleon pairs is expected. Cuts on the difference in azimuthal angles of the two ejected protons increased the magnitude of the observed asymmetries. At low missing energies the Σ data exhibit a strong angular dependence, similar to deuteron photodisintegration.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Glazier, Dr Derek and McGeorge, Dr John and MacGregor, Professor Douglas and Livingston, Dr Kenneth and Owens, Professor Robert and Annand, Dr John and Hamilton, Dr David and Rosner, Professor Guenther |
Authors: | Robinson, J., MacGregor, I.J.D., Annand, J.R.M., Aguar-Bartolomé, P., Akasoy, L. K., Arends, H. J., Azimov, Y.I., Bantawa, K., Beck, R., Bekrenev, V.S., Berghäuser, H., Braghieri, A., Branford, D., Briscoe, W.J., Brudvik, J., Cherepnya, S., Codling, R.F.B., Demissie, B.T., Dieterle, M., Downie, E.J., Drexler, P., Fil’kov, L.V., Glazier, D.I., Gregor, R., Hamilton, D., Heid, E., Hornidge, D., Howdle, D., Jahn, O., Jude, T.C., Kashevarov, V.L., Keshelashvili, I., Kondratiev, R., Korolija, M., Kotulla, M., Koulbardis, A.A., Kruglov, S.P., Krusche, B., Lisin, V., Livingston, K., Manley, D.M., McGeorge, J.C., McNicoll, E.F., Metag, V., Middleton, D.G., Mushkarenkov, A., Nefkens, B.M.K., Nikolaev, A., Novotny, R., Oberle, M., Ostrick, M., Owens, R.O., Otte, P.B., Oussena, B., Pedroni, P., Polonski, A., Prakhov, S., Rosner, G., Rostomyan, T., Schumann, S., Sikora, M.H., Sober, D.I., Starostin, A., Strakovsky, I.I., Suarez, I.M., Supek, I., Tarbert, C.M., Thiel, M., Thomas, A., Unverzagt, M., Watts, D.P., Werthmueller, D., and Witthauer, L. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | European Physical Journal A |
Publisher: | Springer |
ISSN: | 1434-6001 |
ISSN (Online): | 1434-601X |
Copyright Holders: | Copyright © 2013 The Authors |
First Published: | First published in European Physical Journal A 49:65 |
Publisher Policy: | Reproduced under a Creative Commons License |
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