Shape transition observed in neutron-rich pf-shell isotopes studied via proton inelastic scattering
作者： E. Takeshita , S. Takeuchi , S. Ota , H. Baba , S. Bishop
DOI: 10.1016/J.NUCLPHYSA.2008.02.280
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摘要: Abstract The structure of the neutron rich pf-shell nuclei 58Ti36, 60Cr36 and 62Cr38 was studied by proton inelastic scattering in inverse kinematics. Large quadrupole deformation lengths 1.12(16) fm 1.36(14) were obtained for 60Cr 62Cr, respectively, which confirm enhanced collectivity these nuclei. An excited state observed 62Cr at 1180(10) keV with tentative assignment J π = 4 + . increase E x ( ) / 2 ratio indicates that nature changes from vibrational to rotational affords evidence development static deformation. excitation energy newly 2+ 58Ti (1046(17) keV) shows hindered collectivity. contrast between structures Cr Ti suggests contributions both protons neutrons are crucial large close N 40 From comparison shell model calculations, is found originate admixture pf- gd-shells across sub-shell gap.
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