Calculated Q values for the cold splitting of even-even nuclei into th
ree particles of equal size, as well as for various fission processes
accompanied by light-particle emission, are listed for nuclides with Z
= 90-116, The released energy gives a good indication about the compe
tition between different emitted particles. Input mass values are take
n from measurements (when available), from systematics, or from variou
s calculated mass tables. Q values corresponding to the six most proba
ble cases of binary fission are given for each parent nucleus. Lifetim
es (if measured) and alpha-decay Q values and partial half-lives are g
iven for the listed parents; the lifetimes for alpha decay are experim
ental values or are estimated with a semiempirical formula. Four possi
bilities to emit the light particle He-4,He-6,He-8, Be-6,Be-8,Be-10,Be
-12, C-10,C-12,C-14,C-16,C-18, and O-14,O-16,O-18,O-20,O-22,O-24 are a
nalyzed: from the most probable light fragment, from its corresponding
heavy fragment, and as half a particle from each fragment of an asymm
etric or symmetric binary fission; the two processes having the larges
t Q values are listed with each of the 18 light particles. Data for a
larger set of parent nuclei (including odd proton and neutron numbers)
are available in a computer-readable file. (C) 1988 Academic Press.