First isomeric quadrupole moment measured in fragmentation reactions: The case of 61 Fem 9/2+
Language
en
Article de revue
This item was published in
Physical Review C. 2007, vol. 75, p. 051302
American Physical Society
English Abstract
This paper demonstrates the feasibility of quadrupole moment measurements on isomeric levels populated in projectile fragmentation reactions. The neutron-rich 61Fe(9/2+) [E*= 861 keV, T1/2= 239(5) ns] isomer was produced ...Read more >
This paper demonstrates the feasibility of quadrupole moment measurements on isomeric levels populated in projectile fragmentation reactions. The neutron-rich 61Fe(9/2+) [E*= 861 keV, T1/2= 239(5) ns] isomer was produced and spin aligned by the intermediate energy fragmentation of a 64Ni beam and implanted in a Cd single crystal. Its spectroscopic quadrupole moment |Qs|=41(6) e fm2 agrees with mean-field based calculations using the finite-range Gogny force, suggesting a moderately deformed shape characterized by an intrinsic charge quadrupole moment Q0=-85 e fm2 or Q0=+115 e fm2. The present measurement paves the way for future determinations of isomeric quadrupole moments in more exotic nuclei.Read less <
Origin
Hal imported