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Title: New structure information on Mg-30, Mg-31 and Mg-32
Authors: Mach, H., Fraile, Luis M., Tengblad, Olof, Boutami, Rafik, Jollet, C., Plóciennik, W. A., Yordanov, D. T., Stanoiu, M., García Borge, María José, Butler, P. A., Cederkäll, J., Dessagne, Ph., Fogelberg, B., Fynbo, H., Hoff, P., Jokinen, A., Korgul, A., Köster, U., Kurcewicz, W., Maréchal, F., Motobayashi, T., Mrazek, J., Neyens, G., Nilsson, T., Pedersen, S., Poves, Alfredo, Rubio, Berta, Ruchowska, E.
Keywords: [PACS] Lifetimes, widths
[PACS] γ transitions and level energies
[PACS] Properties of specific nuclei listed by mass ranges: 20 ≤ A ≤ 38
Issue Date: 19-Jul-2005
Publisher: Società Italiana di Fisica
Springer
Abstract: The fast timing βγγ(t) method was applied to investigate the level lifetimes in 30,31,32Mg. Levels in Mg have been populated in β and β-delayed neutron emission of Na, at the ISOLDE facility. From the γγ coincidences a number of new states have been identified and new level schemes were constructed for 30 31,32Mg. The following preliminary half lives have been determined: T-1/2 = 3.9(4) ns for the 1789 keV state in 30Mg, T-1/2 = 133(8) ps and 10.5(8) ns for the 221 keV and 461 keV states in 31Mg, respectively, and T-1/2 = 16(4) ps for the 885 keV level in 32Mg. The 1789 keV level was established as a candidate for the intruder 0(+) configuration in 30Mg with a possible strong E0 branch to the ground state.
Description: 5 pages, 10 figures.-- PACS nrs.: 21.10.Tg; 23.20.Lv; 27.30.+t.-- Issue title: "ENAM 2004, Fourth International Conference on Exotic Nuclei and Atomic Masses" (Pine Mountain, Georgia, Sep 12-16, 2004).
Publisher version (URL): http://dx.doi.org/10.1140/epjad/i2005-06-159-0
URI: http://hdl.handle.net/10261/4753
ISSN: 1434-6001 (Print)
1434-601X (Online)
???metadata.dc.identifier.doi???: 10.1140/epjad/i2005-06-159-0
Citation: The European Physical Journal A: Hadrons and Nuclei 25(Suppl.1): 105-109 (2005)
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