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Potential energy calculations in conjunction with the multi-modal random neck-rupture model of Brosa, Großmann and Müller (BGM model) indicate the existence of four fission modes in the compound nucleus 238Np. The splitting of the standard mode into three submodes is demonstrated theoretically. The existence of a third standard mode in fission is proposed for heavier nuclei, where a non-negligible yield of more asymmetric fission fragments is observed experimentally. The calculated fission fragment properties for 238Np are discussed and compared to experimental results.

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Authors: SIEGLER P, JRC Geel (BE);HAMBSCH F-J, JRC Geel (BE);OBERSTEDT S, SCK/CEN, Mol (BE);THEOBALD J P, Technische Hochschule, Darmstadt (DE)
Bibliographic Reference: Article: Nuclear Physics A
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