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1 | \section{Introduction} |
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2 | |
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3 | \hspace{1.0em} Geant4 currently offers both a parameterized fission model |
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4 | and a data-driven fission model. The parameterized model predicts the |
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5 | final excited fragments which result from the symmetric or asymmetric |
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6 | fission of an excited nucleus. This model is considered as a competitor |
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7 | to the evaporation process for nuclei with atomic number $A \geq 65$. |
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8 | Here, the final state generation is discussed, while the calculation of |
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9 | the relative probability of fission with respect to evaporation channels |
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10 | is described in the chapter on evaporation. |
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11 | |
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12 | An alternative, data-driven model describes neutron-induced and spontaneous |
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13 | fission and was developed at Lawrence Livermore National Laboratory. It has |
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14 | improved multiplicity sampling and is based on a collection of empirical |
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15 | models. These models and the data upon which they are based are discussed. |
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16 | |
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