Nuclear magnetic resonance on oriented 109In(4.2 h) and 110In(4.9 h) after recoil implantation into Fe

Radioactive 109In(jsup(π) = 9/2+; T1sub(/)2 = 4.2 h) and 110In(jsup(π) = 7+; T1sub(/)2 = 4.9 h) were produced via the 109Ag (α,chin) reactions and recoil-implanted into Fe foils. With the technique of nuclear magnetic resonance on oriented nuclei the magnetic hyperfine splittings were investigated in external magnetic fields B0 = 0.5 ... 4.2 kG. The zero-field splitting were measured as 268.9(2) MHz and 147.3(3) MHz for 109InFe and 110InFe, respectively. With the known hyperfine field Bsub(H)sub(F)(InFe) = -286.6(5)kG the nuclear g-factors are deduced as g(109In) = 1.231(3) and g(110In) = 0.674(2). Our result for 109In shows that the πg9sub(/)2 g-factors vary by only approx.0.1% between A = 109 and 115. For the vertical stroke πg9sub(/)2νd5sub(/)2>7sub(+) state of 110In the additivity relation of magnetic moments is fulfilled to an accuracy of 0.3(3)%. (orig.)