Nuclear spins and moments of Ga isotopes reveal sudden structural changes between N=40 and N=50.
Phys Rev Lett
; 104(25): 252502, 2010 Jun 25.
Article
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| MEDLINE
| ID: mdl-20867369
ABSTRACT
Collinear laser spectroscopy was performed on Ga (Z=31) isotopes at ISOLDE, CERN. A gas-filled linear Paul trap (ISCOOL) was used to extend measurements towards very neutron-rich isotopes (N=36-50). A ground state (g.s.) spin I=1/2 is measured for 73Ga, being near degenerate with a 3/2{-} isomer (75 eVâ²E{ex}â²1 keV). The 79Ga g.s., with I=3/2, is dominated by protons in the πf{5/2} orbital and in 81Ga the 5/2{-} level becomes the g.s. The data are compared to shell-model calculations in the f{5/2}pg{9/2} model space, calling for further theoretical developments and new experiments.
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Banco de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2010
Tipo del documento:
Article
País de afiliación:
Reino Unido