Phys. Rev. Lett. 94, 172501 (2005) [5 pages]“Safe” Coulomb Excitation of 30MgReceived 17 December 2004; published 4 May 2005 We report on the first radioactive beam experiment performed at the recently commissioned REX-ISOLDE facility at CERN in conjunction with the highly efficient γ spectrometer MINIBALL. Using 30Mg ions accelerated to an energy of 2.25 MeV/u together with a thin natNi target, Coulomb excitation of the first excited 2+ states of the projectile and target nuclei well below the Coulomb barrier was observed. From the measured relative deexcitation γ-ray yields the B(E2;0gs+→21+) value of 30Mg was determined to be 241(31)e2 fm4. Our result is lower than values obtained at projectile fragmentation facilities using the intermediate-energy Coulomb excitation method, and confirms the theoretical conjecture that the neutron-rich magnesium isotope 30Mg resides outside the “island of inversion.” © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.172501
DOI:
10.1103/PhysRevLett.94.172501
PACS:
25.70.De, 21.10.Re, 27.30.+t
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.