$g$ factors of high spin states in ${}^{154, 155}{Er}$ and ${}^{157}{Yb}$ and the nature of the neutron ${\frac{13}{2}}^{+}$ quasiparticle in transitional nuclei

The

g

factors of the

I^{π} = 11^{-}

isomer in

{}^{154}{Er}

and

I^{π} = {\frac{13}{2}}^{+}

isomers in

{}^{155}{Er}

and

{}^{157}{Yb}

were measured using the technique of time-dependent perturbed angular distributions. The value obtained for

{}^{154}{Er}

g = + 0.0154 (12)

, indicates a predominant configuration of

ν {[i_{\frac{13}{2}}, h_{\frac{9}{2}}]}_{10^{-}, 11^{-}}

for the isomeric state. The results for

{}^{155}{Er}

and

{}^{157}{Yb}

g = - 0.085 (5)

and

g = - 0.116 (12)

, respectively, are explained in terms of Pauli blocking of the

3^{-}

core excitation component in the wave function of the

{\frac{13}{2}}^{+}

state.

This publication has 7 references indexed in Scilit:

gfactors of high spin states inEr154,155andYb157and the nature of the neutron132+quasiparticle in transitional nuclei