PROC. FRENCH-JAPANESE SYMPOSIUM ON NUCLEAR STRUCTURE PROBLEMS,
RIKEN, WAKOSHI, SAITAMA, JAPAN,
JAN 5-8, 2011, WORLD SCIENTIFIC, TO APPEAR,
(LANL PREPRINT LA-UR-11-11012)

STUDIES OF FISSION-YIELD MODELS
P. MÖLLER
Theoretical Division, Los Alamos National Laboratory, Los Alamos,
New Mexico 87545, USA


J. RANDRUP
Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA,

We study further a recent model for fission-fragment yield distributions based on Brownian shape motion on 5D potential-energy surfaces. Previously it was shown that this model describes well the transition between symmetric and asymmetric fission in the light Th region; here we study this transition near ²⁵⁸Fm and compare to scission-type yield models. We also study the impact of the relative density of grid points in the different shape coordinates. Although extreme changes in grid spacing affect the calculated yields to some degree, we find that the full 5D model with our origina grid choice is remarkably robust and that it is therefore suitable for applications, for example fission yields relevant for fission recycling in the r-process and its termination by fission.

The complete manuscript as a .pdf file is also available for download.

We provide the 3 figures, formatted for printing full-page, as individual .ps.gz files and also as .pdf files which may be suitable to include in presentation files. The .ps files can be directly edited by a person knowledgeable in postscript and will retain their sharpness if blown up to huge sizes:

Figure 1 (ps.gz) or Figure 1 (.pdf) are available for download.


Figure 2 (ps.gz) or Figure 2 (.pdf) are available for download.


Figure 3 (ps.gz) or Figure 3 (.pdf) are available for download.


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Created: Dec 7, 2011 --> Last modified: Thu July 5 2012