Intermediate-energy Coulomb excitation measurements are performed on the N≥40 neutron-rich nuclei 66,68Fe and 64Cr. The reduced transition matrix elements providing a direct measure of the quadrupole collectivity B(E2;21+→01+) are determined for the first time in 68Fe42 and 64Cr40 and confirm a previous recoil distance method lifetime measurement in 66Fe40. The results are compared to state-of-the-art large-scale shell-model calculations within the full fpgd neutron orbital model space using the Lenzi-Nowacki-Poves-Sieja effective interaction and confirm the results of the calculations that show these nuclei are well deformed.
Quadrupole Collectivity in Neutron-Rich Fe and Cr Isotopes
LENZI, SILVIA MONICA;
2013
Abstract
Intermediate-energy Coulomb excitation measurements are performed on the N≥40 neutron-rich nuclei 66,68Fe and 64Cr. The reduced transition matrix elements providing a direct measure of the quadrupole collectivity B(E2;21+→01+) are determined for the first time in 68Fe42 and 64Cr40 and confirm a previous recoil distance method lifetime measurement in 66Fe40. The results are compared to state-of-the-art large-scale shell-model calculations within the full fpgd neutron orbital model space using the Lenzi-Nowacki-Poves-Sieja effective interaction and confirm the results of the calculations that show these nuclei are well deformed.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
