High spin states in Sm143
Abstract
The high spin states of Sm143 have been studied by in-beam γ-spectroscopy following the reaction Te130(Ne20,7n)Sm143 at Elab=137 MeV, using a Clover detector array. More than 50 new gamma transitions have been placed above the previously known Jπ=23/2-, 30 ms isomer at 2795 keV. The level scheme of Sm143 has been extended up to 12 MeV and spin-parity assignments have been made to most of the newly proposed level. Theoretical calculation with the relativistic mean field approach using blocked BCS method, has been performed. A sequence of levels connected by M1 transitions have been observed at an excitation energy ∼8.6 MeV. The sequence appears to be a magnetic rotational band from systematics.
- Publication:
-
Physical Review C
- Pub Date:
- April 2006
- DOI:
- 10.1103/PhysRevC.73.044305
- Bibcode:
- 2006PhRvC..73d4305R
- Keywords:
-
- 27.60.+j;
- 23.20.Lv;
- 23.20.En;
- 90<
- =A<
- =149;
- gamma transitions and level energies;
- Angular distribution and correlation measurements