TY  - JOUR
AU  - Fomichev, A. S.
AU  - Mukha, I.
AU  - Stepantsov, S. V.
AU  - Grigorenko, L. V.
AU  - Litvinova, E. V.
AU  - Chudoba, V.
AU  - Egorova, I. A.
AU  - Golovkov, M. S.
AU  - Gorshkov, A. V.
AU  - Gorshkov, V. A.
AU  - Kaminski, G.
AU  - Krupko, S. A.
AU  - Parfenova, Y. L.
AU  - Sidorchuk, S. I.
AU  - Slepnev, R. S.
AU  - Ter-Akopian, G. M.
AU  - Wolski, R.
AU  - Zhukov, M. V.
PY  - 2011
DA  - 2011//
TI  - Lifetime of (26)S and a limit for its 2p decay energy
T2  - Int. J. Mod. Phys. E
JO  - International Journal of Modern Physics E
SP  - 1491
EP  - 1508
VL  - 20
IS  - 6
PB  - World Scientific Publ Co Pte Ltd
KW  - Properties of nuclei
KW  - nuclear energy
AB  - 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
SN  - 0218-3013
UR  - http://arxiv.org/abs/arXiv:1006.4345
UR  - https://doi.org/10.1142/S0218301311018216
DO  - 10.1142/S0218301311018216
LA  - English
N1  - WOS:000292644900010
ID  - Fomichev_etal2011
ER  -