Hyperfine structure of electronic levels and the first measurement of the nuclear magnetic moment of 63Ni A. B. D’yachkov, V. A. Firsov, A. A. Gorkunov, A. V. Labozin, S. M. Mironov, E. E. Saperstein, S. V. Tolokonnikov, G. O. Tsvetkov and V. Y. Panchenko Eur. Phys. J. A, 53 1 (2017) 13 Published online: 25 January 2017 DOI: 10.1140/epja/i2017-12197-5