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New structure information on Mg-30, Mg-31 and Mg-32

H. Mach ; L. M. Fraile ; O. Tengblad ; R. Boutami ; C. Jollet ; W. A. Plociennik ; D. T. Yordanov ; M. Stanoiu ; M. J. G. Borge ; P. A. Butler ; J. Cederkall ; P. Dessagne ; B. Fogelberg ; H. Fynbo ; P. Hoff ; A. Jokinen ; A. Korgul ; U. Koster ; W. Kurcewicz ; F. Marechal ; T. Motobayashi ; J. Mrazek ; G. Neyens ; Thomas Nilsson (Institutionen för fundamental fysik, Subatomär fysik ; Extern) ; S. Pedersen ; A. Poves ; B. Rubio ; E. Ruchowska
European Physical Journal A (1434-6001). Vol. 25 (2005), p. 105-109.
[Konferensbidrag, refereegranskat]

The fast timing beta gamma gamma(t) method was applied to investigate the level lifetimes in Mg-30,Mg-31,Mg-32. Levels in Mg have been populated in beta and beta-delayed neutron emission of Na, at the ISOLDE facility. From the gamma gamma coincidences a number of new states have been identified and new level schemes were constructed for 30 31,32 Mg. The following preliminary half lives have been determined: T-1/2 = 3.9(4) ns for the 1789 keV state in Mg-30, T-1/2 = 133(8) ps and 10.5(8) us for the 221 keV and 461 keV states in Mg-31, respectively, and T1/2 = 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 Mg-30 with a possible strong E0 branch to the ground state.



Denna post skapades 2006-09-12. Senast ändrad 2014-09-02.
CPL Pubid: 12128

 

Institutioner (Chalmers)

Institutionen för fundamental fysik, Subatomär fysik (2005-2013)

Ämnesområden

Lågenergifysik

Chalmers infrastruktur