A new approach to measure momentum distributions and production cross-sections of neutron rich nuclei using fragment separators

✍ Scribed by O.B. Tarasov; D. Bazin; T. Baumann; A. Gade; T.N. Ginter; M. Hausmann; D.J. Morrissey; J. Pereira; M. Portillo; B.M. Sherrill; A. Stolz; M. Thoennessen

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 724 KB
• Volume: 620
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2010.03.096

✦ Synopsis

The longitudinal momentum distributions of 34 neutron-rich isotopes of elements produced by fragmentation of a 76 Ge beam at 132 MeV/u with 13 r Z r 27 were scanned using a novel experimental approach where a variety of targets with different thicknesses was used with the fragment separator at constant magnetic rigidity. In comparison to models that describe the shape and centroid of fragment momentum distributions, a parametrization based on the measured data was derived. Details of the transmission calculations, the analysis of their uncertainties, as well as the general analysis of momentum distributions and deduced cross-sections obtained with this approach are presented.