2022
Quick information
Type Seminar
Date December 05, 2022 - 11:00
Time 11:00
Location Room 105, GANIL, Caen | France
Share this event
More events
Workshops
February 27 > March 01, 2024
DESIR WORKSHOP 2024
GANIL, Caen | France
Seminar
February 23, 2024 - 11:00
Intertwined quantum phase transitions in the A ~ 100 region
Room 105, GANIL, Caen | France
Seminar
February 20 > 20, 2024 - 11h
Possible batch-mode RIBs at SPIRAL1
GANIL, Guest House

Fission fragment distributions and some comments on the limit to new elements

Peter Moller (Department of Mathematical Physics, Lund University, Sweden)

Since the discovery of fission in 1938-1939 many fission properties have been analyzed by calculating the nuclear potential energy as a function of the shape of the nucleus. To do this one needs to have a realistic model of the potential energy AND perform the study for a sufficient number of shapes. It is only in the past two decades available computer power has made it possible to include the necessary number of shape-degrees of freedoms which leads to potential energies for millions of different shapes. I will show how a simple “random walk” on these surfaces allows us to calculate fission-fragment distributions. Odd-even staggering is also modeled. During my visit here we have studied the variation of odd-even staggering with energy and fissioning systems and further developed the models to describe in more detail new GANIL observations such as local and global odd-even staggering and identify the mechanism leading to odd-even staggering in the odd-proton 239Np isotope.

By now we have sufficient evidence about the predictive reliability of our macroscopic-microscopic model that we with reasonable confidence can make estimates of the possibility of discovering new elements beyond Z=118. I will briefly discuss our view on these possibilities.