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Leistenschneider A, Aumann T, Boretzky K, et al. Photoneutron cross sections for unstable neutron-rich oxygen isotopes. Phys Rev Lett. 2001;86(24):5442-5doi: 10.1103/PhysRevLett.86.5442.
Leistenschneider, A., Aumann, T., Boretzky, K., Cortina, D., Cub, J., Datta Pramanik, U., Dostal, W., Elze, T. W., Emling, H., Geissel, H., Grünschloss, A., Hellstr, M., Holzmann, R., Ilievski, S., Iwasa, N., Kaspar, M., Kleinböhl, A., Kratz, J. V., Kulessa, R., Leifels, Y., Lubkiewicz, E., Münzenberg, G., Reiter, P., Rejmund, M., Scheidenberger, C., Schlegel, C., Simon, H., Stroth, J., Sümmerer, K., Wajda, E., Walús, W., & Wan, S. (2001). Photoneutron cross sections for unstable neutron-rich oxygen isotopes. Physical review letters, 86(24), 5442-5. https://doi.org/10.1103/PhysRevLett.86.5442
Leistenschneider, A, et al. "Photoneutron cross sections for unstable neutron-rich oxygen isotopes." Physical review letters vol. 86,24 (2001): 5442-5. doi: https://doi.org/10.1103/PhysRevLett.86.5442
Leistenschneider A, Aumann T, Boretzky K, Cortina D, Cub J, Datta Pramanik U, Dostal W, Elze TW, Emling H, Geissel H, Grünschloss A, Hellstr M, Holzmann R, Ilievski S, Iwasa N, Kaspar M, Kleinböhl A, Kratz JV, Kulessa R, Leifels Y, Lubkiewicz E, Münzenberg G, Reiter P, Rejmund M, Scheidenberger C, Schlegel C, Simon H, Stroth J, Sümmerer K, Wajda E, Walús W, Wan S. Photoneutron cross sections for unstable neutron-rich oxygen isotopes. Phys Rev Lett. 2001 Jun 11;86(24):5442-5. doi: 10.1103/PhysRevLett.86.5442. PMID: 11415271.
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Phys Rev Lett. 2001 Jun 11;86(24):5442-5. doi: 10.1103/PhysRevLett.86.5442.

Photoneutron cross sections for unstable neutron-rich oxygen isotopes.

Physical review letters

A Leistenschneider, T Aumann, K Boretzky, D Cortina, J Cub, U Datta Pramanik, W Dostal, T W Elze, H Emling, H Geissel, A Grünschloss, M Hellstr, R Holzmann, S Ilievski, N Iwasa, M Kaspar, A Kleinböhl, J V Kratz, R Kulessa, Y Leifels, E Lubkiewicz, G Münzenberg, P Reiter, M Rejmund, C Scheidenberger, C Schlegel, H Simon, J Stroth, K Sümmerer, E Wajda, W Walús, S Wan

Affiliations

  1. Institut für Kernphysik, Johann Wolfgang Goethe-Universität, D-60486 Frankfurt, Germany.

PMID: 11415271 DOI: 10.1103/PhysRevLett.86.5442

Abstract

The dipole response of stable and unstable neutron-rich oxygen nuclei of masses A = 17 to A = 22 has been investigated experimentally utilizing electromagnetic excitation in heavy-ion collisions at beam energies about 600 MeV/nucleon. A kinematically complete measurement of the neutron decay channel in inelastic scattering of the secondary beam projectiles from a Pb target was performed. Differential electromagnetic excitation cross sections d sigma/dE were derived up to 30 MeV excitation energy. In contrast to stable nuclei, the deduced dipole strength distribution appears to be strongly fragmented and systematically exhibits a considerable fraction of low-lying strength.

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