"Safe" Coulomb excitation of Mg-30
Artikel i vetenskaplig tidskrift, 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 Mg-30 ions accelerated to an energy of 2.25 MeV/u together with a thin Ni-nat 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;0(gs)(+)→ 2(1)(+)) value of Mg-30 was determined to be 241(31)e(2) fm(4). 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 Mg-30 resides outside the "island of inversion."










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Chalmers, Teknisk fysik, Subatomär fysik

M. Oinonen

T. Sieber

F. Wenander

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G. Schrieder

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Chalmers, Teknisk fysik, Subatomär fysik

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G. Walter

Physical Review Letters

0031-9007 (ISSN) 1079-7114 (eISSN)

Vol. 94 17 172501 (artno)-


Subatomär fysik



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