O. Serot et C. Wagemans, ENERGY-DISTRIBUTIONS AND YIELDS OF LONG-RANGE ALPHA-PARTICLES EMITTEDDURING SPONTANEOUS FISSION OF PU-238,PU-240,PU-242,PU-244 ISOTOPES, Nuclear physics. A, 641(1), 1998, pp. 34-48
The energy distribution and yield of Long Range Alpha (LRA) particles
emitted during spontaneous fission of (238,240,242,244) Pu-isotopes ha
ve been measured. Correlations between these experimental results with
the total average excitation energy [TXE], the alpha-cluster preforma
tion probability S-alpha and the fission modes have been shown. This p
ermitted us to demonstrate that the LRA emission probability is strong
ly influenced by S-alpha and also that it is very much enhanced for th
e (more deformed) Standard II fission mode compared to the (more spher
ical) Standard I mode. (C) 1998 Elsevier Science B.V.