PT Journal
AU Batist, L
   Gorska, M
   Grawe, H
   Janas, Z
   Kavatsyuk, M
   Karny, M
   Kirchner, R
   La Commara, M
   Mukha, I
   Plochocki, A
   Roeckl, E
TI Systematics of Gamow-Teller beta decay "Southeast" of Sn-100
SO European Physical Journal A
JI Eur. Phys. J. A
PY 2010
BP 45
EP 53
VL 46
IS 1
DI 10.1140/epja/i2010-11025-x
LA English
AB The energy centroids and integrated strengths of Gamow-Teller transitions in the beta(+) and electron-capture decay are analyzed for nuclei whose proton number Z and neutron number N are restricted to 44 <= Z <= 50 and 50 <= N <= 58. The analysis is based on data measured both with high-resolution gamma-ray spectrometry and total gamma-ray absorption techniques. The dependence of the considered quantities on the relative neutron excess are established after taking into account the effects due to the Coulomb interaction and mean-field level occupancies. An extrapolation of this dependence to the lightest known tin isotopes is used to estimate the decay characteristics of Sn-100 and Sn-101. The values extrapolated for the half-lives of Sn-100 and Sn-101 agree with experimental data. Using the extrapolated values together with shell model predictions, the Q values for the electron-capture decay of Sn-100 is evaluated. The quenching factor for beta(+) and the electron-capture decay of the nuclei under consideration here is established to be 0.56(2) with a possible weak dependence on N – Z.
ER