Spin-excitation mechanisms in Skyrme-force time-dependent Hartree-Fock calculations

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J. A. Maruhn,¹ P.-G. Reinhard,² P. D. Stevenson,³ and M. R. Strayer⁴
¹Institut für Theoretische Physik, Universität Frankfurt, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany
²Institut für Theoretische Physik II, Universität Erlangen-Nürnberg, Staudtstrasse 7, D-91058 Erlangen, Germany
³Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
⁴Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6373, USA

Received 26 April 2006; published 11 August 2006

Weinvestigate the role of odd-odd (with respect to time inversion)couplings in the Skyrme force on collisions of light nuclei,employing a fully three-dimensional numerical treatment without any symmetry restrictionsand with modern Skyrme functionals. We demonstrate the necessity ofthese couplings to suppress spurious spin excitations owing to thespin-orbit force in free translational motion of a nucleus butshow that in a collision situation there is a strongspin excitation even in spin-saturated systems which persists in thedeparting fragments. The energy loss is considerably increased by theodd-odd terms.

URL:	http://link.aps.org/doi/10.1103/PhysRevC.74.027601
DOI:	10.1103/PhysRevC.74.027601
PACS:	24.10.-i; 25.70.Lm; 21.60.Jz 24.10.-i Nuclear reaction models and methods 25.70.Lm Heavy ion-induced strongly damped collisions 21.60.Jz Hartree-Fock and random-phase approximations in nuclei YEAR: 2006

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