Studies of Neutron-Deficient Nuclei Near the Z=82 Shell Closure via Cold Fusion Reactions

M. P. Carpenter, F. G. Kondev, R. V. F. Janssens, D. Seweryniak, T. L. Khoo, T. Lauritsen, C. J. Lister, S. Zhu, F. Camera, A. Bracco, B. Million, S. Leoni, D. G. Jenkins, R Wadsworth

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Over the last decade, we have performed in-beam experiments using Gammasphere + FMA to measure excited states in proton-rich Au, Hg, Tl and Ph isotopes. In these studies, the use of the FMA is essential in order to differentiate evaporation residues from the large fission background which dominates the reaction cross-section. In addition, we have found that using near-symmetric reactions at bombarding energies near the Coloumb barrier is beneficial in performing these studies. By keeping the bombarding energy low, fission is minimized and the reaction products are concentrated in only a few channels. New results have recently been obtained using the Zr-90+Mo-92 reaction to study shape co-existence in Tl-181 via the lp evaporation channel. In addition, we have measured the total gamma-ray energy and multiplicity associated with the surviving compund system, Au-179, following the fusion reaction, Zr-90 + Y-89.

Original languageEnglish
Title of host publicationFUSION 08
EditorsKE Rehm, BB Back, H Esbensen, CJ Lister
Place of PublicationMELVILLE
PublisherAmerican Institute of Physics
Number of pages6
ISBN (Print)978-0-7354-0631-5
Publication statusPublished - 2009


  • Gammasphere

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