STRUCTURE OF HEAVY Fe NUCLEI AT THE POINT OF TRANSITION AT N similar to 37

0338727 - ÚJF 2010 RIV PL eng J - Journal Article
Mach, H. - Baluyut, A.M. - Ruchowska, E. - Koster, U. - Fraile, L. M. - Boutami, R. - Bradley, H. - Braun, N. - Fransen, C. - Jolie, J. - Nyberg, J. - Ugryumov, Vadim
STRUCTURE OF HEAVY Fe NUCLEI AT THE POINT OF TRANSITION AT N similar to 37.
Acta physica Polonica. B. Roč. 40, č. 3 (2009), s. 477-480. ISSN 0587-4254. E-ISSN 1509-5770.
[43rd Zakopane Conference on Nuclear Physics. Zakopane, 01.09.2008-07.09.2008]
Institutional research plan: CEZ:AV0Z10480505
Keywords : PICOSECOND LIFETIME MEASUREMENTS * NEUTRON-RICH NUCLEI
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 0.648, year: 2009

We have studied energy levels in Fe-63 populated in the beta-decay of Mn-63. A new (preliminary) level scheme of Fe-63 includes 10 excited states connected by 21 gamma-rays. The first excited states at 357 and 451 keV have the level half-lives of 110 ps and 780 ps, respectively. Three states, at 357, 451, and 1132 keV, are strongly beta-fed with log ft similar to 5, while there is only a very week beta-feeding, if any at all, to the ground state. The new results imply that Fe-63 departs from a simple shell model structure observed for heavier N = 37 isotones of Ni-65 and Zn-67.
Permanent Link: http://hdl.handle.net/11104/0182426