High-spin shell model states in neutron-rich Sn isotopes
Abstract
High-spin states with the seniority v >= 2 have been investigated in the neutron-rich 118,120,122,124,126Sn isotopes. They were produced in fusion-fission processes following 48Ca + 208Pb, 48Ca + 238U reactions and via fission of target nuclei in the 64Ni + 238U system. By employing techniques of delayed- and cross-coincidences, it was possible to establish level schemes up to an 8 MeV excitation energy. The 13- and 15- states were identified as being isomeric and their half-lives were determined. The reduced transition probabilities extracted for isomeric transitions behave very regularly with the mass number A. The spin-parity values assigned to or suggested for the identified states were supported by shell-model calculations and by systematics.
- Publication:
-
Journal of Physics Conference Series
- Pub Date:
- February 2015
- DOI:
- 10.1088/1742-6596/580/1/012037
- Bibcode:
- 2015JPhCS.580a2037I