Transition states at the saddle points and superdeformed or hyperdeformed states in the secondary wells of multiple-humped potential barriers play an important role in low-energy fission processes. In the present work discrete collective spectra at large nuclear deformations are predicted by means of the dinuclear model and combined with the optical model for fission of the Empire-3 system of codes. The formalism is applied to the 233U(n, f) reaction and the computed cross section compared with recent experimental results of the n-TOF Collaboration. Angular anisotopies of fission fragments are evaluated with an improved version of the scission-point model.
T M Shneidman, A V Andreev, M Sin, C Massimi, G Vannini, A Ventura (2012). Advanced fission models in nuclear data calculations. JOURNAL OF PHYSICS. CONFERENCE SERIES, 366, 012046-012046 [10.1088/1742-6596/366/1/012046].
Advanced fission models in nuclear data calculations
MASSIMI, CRISTIAN;VANNINI, GIANNI;
2012
Abstract
Transition states at the saddle points and superdeformed or hyperdeformed states in the secondary wells of multiple-humped potential barriers play an important role in low-energy fission processes. In the present work discrete collective spectra at large nuclear deformations are predicted by means of the dinuclear model and combined with the optical model for fission of the Empire-3 system of codes. The formalism is applied to the 233U(n, f) reaction and the computed cross section compared with recent experimental results of the n-TOF Collaboration. Angular anisotopies of fission fragments are evaluated with an improved version of the scission-point model.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
