Eur. Phys. J. A 10, 123-127
Ground-state spin ofM. Oinonen1, U. Köster1, J. Äystö1, V. Fedoseyev2, V. Mishin2, J. Huikari3, A. Jokinen3, A. Nieminen3, K. Peräjärvi3, A. Knipper4 and G. Walter the ISOLDE Collaboration4
1 EP Division, CERN, CH-1211 Geneva 23, Switzerland
2 Institute of Spectroscopy, Russian Academy of Sciences, RU-142092 Troitsk, Russia
3 Department of Physics, University of Jyväskylä, FIN-40351 Jyväskylä, Finland
4 Institut de Recherches Subatomiques, F-67037 Strasbourg Cedex 2, France
(Received: 17 November 2000 / Revised version: 6 February 2001 Communicated by D. Guerreau)
Beta-decay of has been studied at PSB-ISOLDE, CERN. The intense and pure Mn beam was produced using the Resonance Ionization Laser Ion Source (RILIS). Based on the measured -decay rates the ground-state spin and parity are proposed to be = 5/2-. This result is consistent with the systematic trend of the odd-A Mn nuclei and extends the systematics one step further towards the neutron drip line.
21.10.-k - Properties of nuclei; nuclear energy levels.
23.40.-s - Beta decay.
27.50.+e - 59 89.
© Società Italiana di Fisica, Springer-Verlag 2001