Artículos de revistas
Discovery and cross-section measurement of neutron-rich isotopes in the element range from neodymium to platinum with the FRS
Fecha
2012Registro en:
PHYSICS LETTERS B, AMSTERDAM, v. 717, n. 41398, supl. 1, Part 1, pp. 371-375, OCT 31, 2012
0370-2693
10.1016/j.physletb.2012.09.021
Autor
Kurcewicz, J.
Farinon, F.
Geissel, H.
Pietri, S.
Nociforo, C.
Prochazka, A.
Weick, H.
Winfield, J. S.
Estrade, A.
Allegro, Paula Rangel Pestana
Bail, A.
Belier, G.
Benlliure, J.
Benzoni, G.
Bunce, M.
Bowry, M.
Caballero-Folch, R.
Dillmann, I.
Evdokimov, A.
Gerl, J.
Gottardo, A.
Gregor, E.
Janik, R.
Kelic-Heil, A.
Knoebel, R.
Kubo, T.
Litvinov, Yu. A.
Merchan, E.
Mukha, I.
Naqvi, F.
Pfuetzner, M.
Pomorski, M.
Podolyak, Zs.
Regan, P. H.
Riese, B.
Ricciardi, M. V.
Scheidenberger, C.
Sitar, B.
Spiller, P.
Stadlmann, J.
Strmen, R.
Sun, B.
Szarka, I.
Taieb, J.
Terashima, S.
Valiente-Dobon, J. J.
Winkler, M.
Woods, Ph.
Institución
Resumen
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 U-238 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. (C) 2012 Elsevier B.V. All rights reserved.