The hfs of 103Ag (T 1/2 = 66 min) has been investigated with the atomic-beam magnetic-resonance (ABMR) method. Δν and μ I have been determined independently, and the results are Δν = 39 700 (500) MHz and μ I = + 4.45 (5) n.m. The hfs anomaly Δ107 103 has been determined to be + 3.4 (1.7)%. Theoretical calculations give Δ107 103 = 3.9%. For I = 5, there is a component with a half-life of 13 min which may be 102Ag or 102Ag + 100Ag. Furthermore, signals with a half-life of 9(2) minutes have been obtained for I = 9/2. This activity is ascribed to 101Ag.

The atomic beam magnetic resonance method has been used for measurements of the spin and hyperfine structure of the ground state of 49Cr (42 m) with the following results: I = 5/2, |a| = 49.754 (2) MHz and |b| = 0.018 (17) MHz. The magnetic dipole moment has been calculated from the measured hfs and the known values for 53Cr to be |μI| = 0.476 (3) n.m.

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