Discovery and cross-section measurement of neutron-rich isotopes in the element range from neodymium to platinum with the FRS - INSPIRE

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Discovery and cross-section measurement of neutron-rich isotopes in the element range from neodymium to platinum with the FRS

Dec, 2011

5 pages

Published in:

Phys.Lett.B 717 (2012) 371-375

Published: Oct 31, 2012

e-Print:

1112.0521 [nucl-ex]

DOI:

10.1016/j.physletb.2012.09.021

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Abstract: (Elsevier)

Using the high-resolution performance of the fragment separator FRS at GSI we have discovered 60 new neutron-rich isotopes in the atomic number range of 60⩽Z⩽78 . The new isotopes were unambiguously identified in reactions with a U238 beam impinging on a Be target at 1 GeV/nucleon. The production cross-section for the new isotopes have been measured down to the pico-barn level and compared with predictions of different model calculations. For elements above hafnium fragmentation is the dominant reaction mechanism which creates the new isotopes, whereas fission plays a dominant role for the production of the new isotopes up to thulium.

Note:

9 pages, 4 figures

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