Figure 1

Reported values of the magnetic moment, μ, of the 2083 keV level in ${}^{140}$Ce in units of the nuclear magneton (${\mu }_{\mathrm{N}}$) including the present value (Levy 1965 [4], Schmorak 1964 [5], Körner 1963 [6], and Kalan 1963 [7]). The dashed lines represent the upper and lower of the four reported values with 2σ.Reuse & Permissions

Figure 2

Simplified decay scheme of relevant $A=140$ mass chain.Reuse & Permissions

Figure 3

TDPAC spectrum, $A_{22}$$G_{22}$($t$), of ${}^{140}$Ce in Fe at room temperature using four BaF${}_2$ scintillation detectors without external magnetic field. The solid curve represents the fit of Eq. (5) in the text taking into account the finite time resolution of the TDPAC measurement system.Reuse & Permissions

Figure 4

TDPAC spectra, (a) $R_{\mathrm{S}}$($t$) and (b) $R_{\mathrm{A}}$($t$), of ${}^{140}$Ce in Fe at room temperature using three BaF${}_2$ scintillation detectors with an external magnetic field of 0.3 T. The curve in panel (a) was the result of the fit using Eq. (6) in the text with a constant term and the effective $A_{22}$ value determined in the fit in Fig. 3.Reuse & Permissions

Figure 5

(a) Magnetic moments (in ${\mu }_{\mathrm{N}}$) of the first 2${}^{+}$ and 4${}^{+}$ levels of ${}^{136}$Xe, ${}^{138}$Ba, ${}^{140}$Ce, and ${}^{142}$Nd (there is no experimental value available of the magnetic moment of the 4${}^{+}$ level in ${}^{142}$Nd). The solid circles represent the experimental values taken form Ref. [3] except for the 4${}^{+}$ level of ${}^{140}$Ce, for which from the left to the right are displayed the values from Refs. [5, 6, 7], and the average of the value in Ref. [4] and the present value. The solid lines for the 2${}^{+}$ and 4${}^{+}$ levels signify the shell-model calculation with the CD-Bonn $+$ $G$ matrix (for brevity, SM/CD-Bonn), and the dashed lines signify the shell-model calculation with the P $+$ QQ interaction (SM/P+QQ). (b) Excitation energies (in MeV) of the first 2${}^{+}$ and 4${}^{+}$ levels of ${}^{136}$Xe, ${}^{138}$Ba, ${}^{140}$Ce, and ${}^{142}$Nd. For each nuclide, the left column denotes the experiment [3], the middle column denotes the SM/CD-Bonn calculation, and the right column denotes the SM/P $+$ QQ calculation. In each column, the upper line stands for the 4${}^{+}$ level and the lower for the 2${}^{+}$ level.Reuse & Permissions