Magnetic moment of the 2083 keV level of [140]Ce

Abstract

For the magnetic moment of the 2083 keV level of [140]Ce, there are four published data, all obtained by applying an external magnetic field of less than 5 T to a liquid sample containing [140]La using the time-differential perturbed angular correlation (TDPAC) technique. Although these four values are consistent within two times their uncertainties (2σ), the range of values in 2σ extends from μ=+3.0to +5.2 (in units of nuclear magneton, μ[N]). This time, the TDPAC technique was successfully applied to the 2083 keV level of 140Ce implanted in an Fe foil. The magnetic moment of this level was determined to be μ=+4.00(20)μ[N], employing the known hyperfine field at 141Ce in Fe, −41(2) T, which agrees very well with one of the values, μ=+4.06(15)μ[N]. The present value is compared with two shell-model calculations.