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Hyperfine-Structure Studies of Ni 61 , and the Nuclear Ground-State Electric Quadrupole Moment

1968; American Institute of Physics; Volume: 170; Issue: 1 Linguagem: Inglês

10.1103/physrev.170.136

1536-6065

W. J. Childs, L. S. Goodman,

Nuclear physics research studies

The hyperfine structure of the four lowest atomic levels of ${\mathrm{Ni}}^{61}$ has been studied by the atomic-beam magnetic-resonance technique. Agreement between the results and the theory of the hyperfine interaction is good. The importance of taking account of the substantial departure of the atom from the $\mathrm{LS}$ limit in evaluating the electric quadrupole moment $Q$ of the ${\mathrm{Ni}}^{61}$ nuclear ground state is discussed. Values of $Q$ are determined from two different electron configurations; the values obtained differ by only 3%. The result is in agreement with the previous theoretical prediction of Cohen et al.