Magnetic Moment of the61+State inCa42

The $g$ factor of the $6_1^{+}$ state at 3189 keV ($T_{\frac{1}{2}}=5.4\mathrm{}$ nsec) in ${}_{}{}^{42}{}_{}{}^{}\mathrm{Ca}$ has been remeasured with a significant improvement in accuracy by a pulsed-beam time-differential method using an in-beam superconducting magnet at 61 kG. The $g$ factor obtained is $g\left({6_1}^{+}\right)=-0.415\mathrm{}\pm 0.015$. A $g\left(\nu f_{\frac{7}{2}}\right)=-0.53\mathrm{}\pm 0.02$ is extracted from this result by use of the coexistence wave function due to Erikson; this value is in agreement with the single-particle value of -0.547 indicating a negligible orbital anomaly $\delta g_l$.