Charge, mass, and angular distributions in 20 Ne induced fission of 208 Pb
Abstract
Charge and mass distributions at Elab =114.4 and 102.1 MeV , and the mass-resolved angular distribution at Elab =102.1 MeV in 20 Ne induced fission of 208 Pb have been studied using the recoil catcher technique followed by off-line γ ray spectrometry. The mass distributions have been found to be symmetric at both energies. The data on the variance of the mass distributions from this work and from literature have been analyzed to investigate the effect of the fissility on the stiffness of mass-asymmetric deformations. The stiffness was found to increase up to Z2 /A∼34 and decrease at higher values of Z2 /A . Angular anisotropies of 16 fission products have been measured. The results show that the angular anisotropy is not significantly correlated with the mass asymmetry. The experimentally determined angular anisotropy, averaged over the mass, was found to be significantly higher than that calculated using a statistical saddle point model.
- Publication:
-
Physical Review C
- Pub Date:
- February 2004
- DOI:
- 10.1103/PhysRevC.69.024613
- Bibcode:
- 2004PhRvC..69b4613T
- Keywords:
-
- 25.85.Ge;
- Charged-particle-induced fission