Double beta decay of Nd-150 to the first 0(+) excited state of Sm-150

Two neutrino double beta decay of Nd-150 to the first 0(+) excited state in Sm-150 is investigated with the 400 cm(3) low-background HPGe detector. Data analysis for 11 320.5 h shows the excess of events at 333.9 and 406.5 keV. This makes it possible to estimate the half-life of the investigated process as [1.4(-0.2)(+0.4)(stat) +/- 0.3(syst)] x 10(20) yr. (C) 2004 MAIK Nauka / Interperiodica.