Gm. Terakopian et al., NEUTRON MULTIPLICITIES AND YIELDS OF CORRELATED ZR-CE AND MO-BA FRAGMENT PAIRS IN SPONTANEOUS FISSION OF CF-252, Physical review letters, 73(11), 1994, pp. 1477-1480
High resolution gamma-gamma and gamma-gamma-gamma coincidences in the
spontaneous fission of Cf-252 were measured. Relative yields and neutr
on multiplicities from zero up to 10 were extracted directly for the f
irst time in fission for the Zr-Ce and Mo-Ba correlated fragment pairs
. The 0, 8, and the new 10 neutron emission yields for Mo-Ba are signi
ficantly larger than those reported previously for total Cf-252 sponta
neous fission. Our results demonstrate that the use of this high resol
ution gamma-gamma-gamma coincidence technique can provide important, p
reviously inaccessible data on fission.