%0 Journal Article
%T Lifetime of (26)S and a limit for its 2p decay energy
%A Fomichev, A. S.
%A Mukha, I.
%A Stepantsov, S. V.
%A Grigorenko, L. V.
%A Litvinova, E. V.
%A Chudoba, V.
%A Egorova, I. A.
%A Golovkov, M. S.
%A Gorshkov, A. V.
%A Gorshkov, V. A.
%A Kaminski, G.
%A Krupko, S. A.
%A Parfenova, Y. L.
%A Sidorchuk, S. I.
%A Slepnev, R. S.
%A Ter-Akopian, G. M.
%A Wolski, R.
%A Zhukov, M. V.
%J International Journal of Modern Physics E
%D 2011
%V 20
%N 6
%I World Scientific Publ Co Pte Ltd
%@ 0218-3013
%G English
%F Fomichev_etal2011
%O WOS:000292644900010
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=693), last updated on Wed, 02 Nov 2011 09:26:47 +0000
%X The unknown isotope (26)S, expected to decay by two-proton (2p) emission, was studied theoretically and searched experimentally. The structure of this nucleus was examined within the relativistic mean field (RMF) approach. A method for taking into account the many-body structure in the three-body decay calculations was developed. The results of the RMF calculations were used as an input for the three-cluster decay model optimized for the study of a possible 2p decay branch of this nucleus. The experimental search for (26)S was performed by fragmentation of a 50.3 A MeV (32)S beam. No events of a particles table (26)S or (25)P (a presumably proton-unstable subsystem of (26)S) were observed. Based on the obtained production systematics, an upper half-life limit of T(1/2) < 79 ns was established from the time-of-flight through the fragment separator. Together with the theoretical lifetime estimates for two-proton decay, this gives a decay energy limit of Q(2p) > 640 keV for (26)S. Analogous limits for (25)P are found as T(1/2) < 38 ns and Q(p) > 110 keV. In the case that the one-proton emission is the main branch of the (26)S decay, a limit Q(2p) > 230 keV would follow for this nucleus. According to these limits, it is likely that (26)S resides in the picosecond life time range
%K Properties of nuclei
%K nuclear energy
%R 10.1142/S0218301311018216
%U http://arxiv.org/abs/arXiv:1006.4345
%U https://doi.org/10.1142/S0218301311018216
%P 1491-1508