Physics – Nuclear Physics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..561..399y&link_type=abstract
TOURS SYMPOSIUM ON NUCLEAR PHYSICS IV: TOURS 2000. AIP Conference Proceedings, Volume 561, pp. 399-410 (2001).
Physics
Nuclear Physics
Collective Models, 220<=A, Spontaneous Fission, Collective Levels, Single-Particle Levels And Strength Functions
Scientific paper
The damping mechanism of the damped collective motion is studied microscopically on the basis of the linear response theory. As for isovector modes the giant dipole resonance built on highly excited states in 208Pb is considered. The width due to the two-body collisional damping is found to be able to reproduce well the temperature dependence of the observed width. As for isoscalar modes, the slow collective motion like fission is studied. The transport coefficients, friction γ, inertia M and local stiffness C are computed along a fission path of 224Th. The calculated effective damping rate ɛ=γ/(2M|C|) at the saddle is in qualitative agreement with the observed one which increases markedly with temperature. More realistic description of solving the transport equation is necessary to get the quantitative agreement. The approximate functional form of the friction is provided for that. Moreover, it is noticed that the effect of shell structure on the friction should be taken into account as well as the shell correction energy in the theoretical estimate of the production of super heavy elements based on the transport equation. .
Hofmann Helmut
Ivanyuk Fedor A.
Yamaji Shuhei
No associations
LandOfFree
Microscopic description of damped collective motion does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Microscopic description of damped collective motion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microscopic description of damped collective motion will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1183520