Signature-splitting systematics of the positive-parity bands in odd-N rare-earth nuclei

摘要: Abstract Experimental values of the signature-dependent splitting in energy for N = 91–101 isotopes erbium ytterbium, hafnium, tungsten, and osmium (Z 68–76) are extracted lowest positive-parity quasineutron configurations. A correlation is established between this relative Fermi level, λ, that Ω 1 2 component i 13 neutron orbital. Whereas cranking calculations based on deformations appropriate to no quasiparticle excitation underpredict observed signature splitting, can be reproduced 95–99 isotopes, when deformation effect exciting a included.