As. Barabash et al., SEARCH FOR BETA-BETA-DECAY OF GE-76 TO THE EXCITED-STATES IN SE-76, ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 352(2), 1995, pp. 231-233
Lower limits on the half-life of the beta beta(2 upsilon + 0 upsilon)
decay of Ge-76 to the excited states in Se-76 have been obtained using
the results of low-background measurements with a HPGe detector surro
unded by passive germanium shielding: T-1/2(0(+) --> 2(1)(+)) > 1.1 .
10(21) y, T-1/2(0(+) --> O-1(+)) > 1.7 . 10(21) y, T-1/2(0(+) --> 2(1)
(+)) > 1.4 . 10(21) y.