Evolution of fission-fragment mass distributions in the neutron-deficient lead region
- Ghys, L.
- Andreyev, A. N.
- Huyse, M.
- Van Duppen, P.
- Sels, S.
- Andel, B.
- Antalic, S.
- Barzakh, A.
- Capponi, L.
- Cocolios, T. E.
- Derkx, X.
- De Witte, H.
- Elseviers, J.
- Fedorov, D. V.
- Fedosseev, V. N.
- Hessberger, F. P.
- Kalaninová, Z.
- Köster, U.
- Lane, J. F. W.
- Liberati, V.
- Lynch, K. M.
- Marsh, B. A.
- Mitsuoka, S.
- Möller, P.
- Nagame, Y.
- Nishio, K.
- Ota, S.
- Pauwels, D.
- Page, R. D.
- Popescu, L.
- Radulov, D.
- Rajabali, M. M.
- Randrup, J.
- Rapisarda, E.
- Rothe, S.
- Sandhu, K.
- Seliverstov, M. D.
- Sjödin, A. M.
- Truesdale, V. L.
- Van Beveren, C.
- Van Den Bergh, P.
- Wakabayashi, Y.
- Warda, M.
DOIAbstract
International audienceLow-energy β-delayed fission of At194,196 and Fr200,202 was studied in detail at the mass separator ISOLDE at CERN. The fission-fragment mass distributions of daughter nuclei Po194,196 and Rn202 indicate a triple-humped structure, marking the transition between asymmetric fission of Hg178,180 and symmetric fission in the light Ra-Rn nuclei. Comparison with the macroscopic-microscopic finite-range liquid-drop model and the self-consistent approach employing the Gogny D1S energy density functional yields discrepancies. This demonstrates once more the need for dynamical fission calculations, because for both models the potential-energy surfaces lack pronounced structures, in contrast to those for the actinide region
Add to ORKG