| Autor: |
Mo¨ller, Peter, Madland, David G., Sierk, Arnold J., Iwamoto, A. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2001, Vol. 561 Issue 1, p455, 14p |
| Abstrakt: |
We calculate complete fission potential-energy surfaces versus five shape coordinates: elongation, neck diameter, light-fragment deformation, heavy-fragment deformation, and mass asymmetry for even nuclei in the range 82 ≤ Z ≤ 100. The potential energy is calculated in terms of the macroscopic-microscopic model with a folded-Yukawa single-particle potential and a Yukawa-plus-exponential macroscopic model in the three-quadratic-surface parameterization. The structure of the calculated energy landscapes exhibits multiple valleys leading to different scission configurations. The properties of these valleys and the saddle-points at the beginning of these valleys can be directly related to bimodal fission properties observed in the radium region, in the light-actinide region, and in the fermium region[sup 1–4]). The rms deviation between calculated and experimental fission-barrier heights is only 1.08 MeV for 31 nuclei from [sup 70]Se to [sup 252]Cf. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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