Time-odd effects and the spectroscopic properties of odd-mass fission fragments
Abstract
Adding an extra nucleon having a definite K-value to an axially symmetrical even-even core generates a breaking of the time-reversal symmetry. Within the Skyrme-Hartree-Fock approach the effects of the time-odd mean-field terms resulting from the presence of non-vanishing current and spin-vector densities are investigated. In this preliminary study, pairing correlations are not taken into account. The associated removal of the Kramers degeneracy is interpreted in terms of diamagnetic/paramagnetic types of polarization of the even-even core in the field of an odd particle. This general approach is illustrated here by calculations in the region of light fragments of heavy (e.g. actinide) nuclei.
- Publication:
-
4th International Workshop on Nuclear Fission and Fission-Product Spectroscopy
- Pub Date:
- October 2009
- DOI:
- 10.1063/1.3258220
- Bibcode:
- 2009AIPC.1175..174Q
- Keywords:
-
- HF calculations;
- symmetry breaking;
- polarization in nuclear reactions and scattering;
- nuclear spectroscopic factors;
- nuclear mass;
- 21.60.Jz;
- 24.80.+y;
- 24.70.+s;
- 29.30.Kv;
- 21.10.Dr;
- Hartree-Fock and random-phase approximations;
- Nuclear tests of fundamental interactions and symmetries;
- Polarization phenomena in reactions;
- X- and gamma-ray spectroscopy;
- Binding energies and masses