%0 Journal Article
%T The population of metastable states as a probe of relativistic-energy fragmentation reactions
%A Denis Bacelar, A. M. et al
%A Algora, A.
%A Molina, F.
%A Rubio, B.
%J Physics Letters B
%D 2013
%V 723
%N 4-5
%I Elsevier Science Bv
%@ 0370-2693
%G English
%F DenisBacelar_etal2013
%O WOS:000320745400005
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1502), last updated on Mon, 26 Aug 2013 12:02:31 +0000
%X Isomeric ratios have been measured for high-spin states in Po-198,200,206,208(84), At-208,209,210,211(85), Rn-210,211,212,213,214(86), Fr-208,211,212,213,214(87), Ra-210,211,212,214,215(88), and Ac-215(89) following the projectile fragmentation of a 1 AGeV U-238 beam by a Be-9 target at GSI Helmholtzzentrum fur Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 μs and spin values up to 55/2 (h) over bar were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion-ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values.
%R 10.1016/j.physletb.2013.05.033
%U https://doi.org/10.1016/j.physletb.2013.05.033
%P 302-306