Projectile fragmentation of 129Xe at Elab=790A MeV

J. Reinhold, J. Friese, H.-J. Körner, R. Schneider, K. Zeitelhack, H. Geissel, A. Magel, G. Münzenberg, and K. Sümmerer
Phys. Rev. C 58, 247 – Published 1 July 1998
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We have measured production yields and longitudinal momentum distributions of projectilelike fragments in the reaction 129Xe+27Al at an energy of Elab=790A MeV. Production cross sections higher than expected from systematics were observed for nuclei in the neutron-deficient tails of the isotopic distributions. A comparison with previously measured data from the fragmentation of 136Xe ions shows that the production yields strongly depend on the neutron excess of the projectile with respect to the line of β stability. The momentum distributions exhibit a dependence on the fragment neutron-to-proton ratio in isobaric chains, which was not expected from systematics so far. This can be interpreted by a higher excitation of the projectile during the formation of neutron-deficient fragments.

  • Received 20 January 1998


©1998 American Physical Society

Authors & Affiliations

J. Reinhold*, J. Friese, H.-J. Körner, R. Schneider, and K. Zeitelhack

  • Physikdepartment E12, Technische Universität München, D-85747 Garching, Germany

H. Geissel, A. Magel, G. Münzenberg, and K. Sümmerer

  • Gesellschaft für Schwerionenforschung, D-64220 Darmstadt, Germany

  • *Present address: Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439.

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Vol. 58, Iss. 1 — July 1998

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