Nuclear properties of the exotic high-spin isomer <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Hf</mi></mrow><mrow></mrow><mrow><mi mathvariant="normal">m</mi><mn>2</mn><mn></mn></mrow><mrow></mrow><mrow></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>178</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> from collinear laser spectroscopy

N. Boos; F. Le Blanc; M. Krieg; J. Pinard; G. Huber; M. D. Lunney; D. Le Du; R. Meunier; M. Hussonnois; O. Constantinescu; J. B. Kim; Ch. Briançon; J. E. Crawford; H. T. Duong; Y. P. Gangrski; T. Kühl; B. N. Markov; Yu. Ts. Oganessian; P. Quentin; B. Roussière; J. Sauvage

doi:10.1103/PhysRevLett.72.2689

Nuclear properties of the exotic high-spin isomer ${}^{178}{Hf}^{m 2}$ from collinear laser spectroscopy

N. Boos, F. Le Blanc, M. Krieg, J. Pinard, G. Huber, M. D. Lunney, D. Le Du, R. Meunier, M. Hussonnois, O. Constantinescu, J. B. Kim, Ch. Briançon, J. E. Crawford, H. T. Duong, Y. P. Gangrski, T. Kühl, B. N. Markov, Yu. Ts. Oganessian, P. Quentin, B. Roussière, and J. Sauvage

Phys. Rev. Lett. 72, 2689 – Published 25 April 1994

Abstract

The complete hyperfine spectrum in the optical transition 5 $d^{2}$ 6 $s^{2}$ ${}^{3}$ $P_{2}$ →5d6 $s^{2}$ 6p ${}^{1}$ $P_{1}$ of ${}^{178}{Hf}^{m 2}$ was recorded by collinear laser spectroscopy using nanogram amounts of samples. The quadrupole moment and isomer shift were determined for the first time as well as a precise value and the sign of the magnetic dipole moment. The change in nuclear mean-square charge radius between the isomeric state ${}^{178}{Hf}^{m 2}$ and the ground state ${}^{178}{Hf}^{g}$ was evaluated as δ〈 $r^{2}$ $〉^{178.178 m 2}$ =-0.059(9) ${fm}^{2}$ . From the hyperfine A and B factors the magnetic moment $μ_{I}^{178 m 2}$ =+8.16(4) nuclear magnetons and the spectroscopic quadrupole moment $Q_{s}^{178 m 2}$ =+6.00(7) b were were extracted.

Received 27 September 1993

DOI:https://doi.org/10.1103/PhysRevLett.72.2689

Authors & Affiliations

N. Boos, F. Le Blanc, M. Krieg, J. Pinard, G. Huber, M. D. Lunney, D. Le Du, R. Meunier, M. Hussonnois, O. Constantinescu, J. B. Kim, Ch. Briançon, J. E. Crawford, H. T. Duong, Y. P. Gangrski, T. Kühl, B. N. Markov, Yu. Ts. Oganessian, P. Quentin, B. Roussière, and J. Sauvage

Institut für Physik der Universität Mainz, 55099 Mainz, Germany
Institut de Physique Nucléaire, Institut National de Physique Nucléair e et de Physique des Particules(enCentre National de la Recherche Scientique, 91406 Orsay, France
Laboratoire Aimé Cotton, 91405 Orsay, France
Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse(enOrsay, Institut de Physique Nucléaire, Institut National de Physique Nucléaire et de Physique des Particules(enCentre National de la Recherche Scientique, 91406 Orsay, France
Gesselschaft für Schwerionenforschung Darmstadt m.b.H., 64291 Darmstadt, Germany
Foster Radiation Laboratory, McGill University, Montreal, Quebec, Canada
Joint Institute for Nuclear Research, Dubna, POB 79, 101 000 Moscow Region, Russia