Discovery and cross-section measurement of neutron-rich isotopes in the element range from neodymium to platinum with the FRS
- Kurcewicz, J.
- Farinon, F.
- Geissel, H.
- Pietri, S.
- Nociforo, C.
- Prochazka, A.
- Weick, H.
- Winfield, J.S.
- Estradé, A.
- Allegro, P.R.P.
- Bail, A.
- Bélier, G.
- Benlliure, J.
- Benzoni, G.
- Bunce, M.
- Bowry, M.
- Caballero-Folch, R.
- Dillmann, I.
- Evdokimov, A.
- Gerl, J.
- Gottardo, A.
- Gregor, E.
- Janik, R.
- Kelić-Heil, A.
- Knöbel, R.
- Kubo, T.
- Litvinov, Yu.A.
- Merchan, E.
- Mukha, I.
- Naqvi, F.
- Pfützner, M.
- Pomorski, M.
- Podolyák, Zs.
- Regan, P.H.
- Riese, B.
- Ricciardi, M.V.
- Scheidenberger, C.
- Sitar, B.
- Spiller, P.
- Stadlmann, J.
- Strmen, P.
- Sun, B.
- Szarka, I.
- Taïeb, J.
- Terashima, S.
- Valiente-Dobón, J.J.
- Winkler, M.
- Woods, Ph.
Publication date
October 2012
DOI Publisher
Elsevier B.V. Published by Elsevier B.V.Abstract
AbstractUsing 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
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