Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2009-08-26
Phys.Rev.C80:034609,2009
Physics
Nuclear Physics
Nuclear Experiment
accepted for publication in Phys.Rev.C
Scientific paper
10.1103/PhysRevC.80.034609
Production cross sections for neutron-rich nuclei from the fragmentation of a 76Ge beam at 132 MeV/u were measured. The longitudinal momentum distributions of 34 neutron-rich isotopes of elements 13 <= Z <= 27 were scanned using a novel experimental approach of varying the target thickness. Production cross sections with beryllium and tungsten targets were determined for a large number of nuclei including 15 isotopes first observed in this work. These are the most neutron-rich nuclides of the elements 17 <= Z <= 25 (50Cl, 53Ar, 55,56K, 57,58Ca, 59,60,61Sc, 62,63Ti, 65,66V, 68Cr,70Mn). A one-body Qg systematics is used to describe the production cross sections based on thermal evaporation from excited prefragments. Some of the fragments near 58Ca show anomalously large production cross sections.
Amthor Alan Matthew
Baumann Thomas
Bazin Daniel
Gade Alexandra
Ginter T. N.
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