Synthetic Paths to the Heaviest Elements
- Walter Loveland, Oregon State University
Wednesday, November 28, 4:00 PM - Nuclear Science Seminar
NSCL Lecture Hall
I discuss the nuclear reactions/mechanisms used in the synthesis of the heaviest nuclei. For complete fusion reactions, involving stable or radioactive beams, the cross section for producing a heavy reaction product, EVR, can be represented as
where capture(Ec.m., J) is the cross section at center of mass energy Ec.m. and spin J. PCN is the probability that the projectile-target system will evolve from the contact configuration to inside the fission saddle point to form a completely fused system rather than re-separating (quasifission, fast fission). Wsur is the probability that the completely fused system will de-excite by neutron emission rather than fission. I discuss the results of recent experiments that characterize these quantities in heavy element synthesis reactions.
I point out the opportunities afforded by radioactive beams in heavy element synthesis, as well as the use of damped collisions and multi-nucleon transfer reactions.