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1 | %\subsection{Pauli blocking simulation\editor{Gunter}} |
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2 | |
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3 | The cross sections used in this model are cross sections for free particles. In |
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4 | the nucleus these cross sections are reduced to effective cross sections by |
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5 | Pauli-blocking due to Fermi statistics. |
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6 | |
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7 | For nucleons created by a collision, ie. an inelastic |
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8 | scattering or from decay, we check that all secondary nucleons occupy a state |
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9 | allowed by Fermi statistics. We assume that the nucleus in its ground state and |
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10 | all states below Fermi energy are occupied. All secondary nucleons therefore |
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11 | must have a momentum $p_i$ above local Fermi momentum $p_F(r)$, i.e. |
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12 | \begin{equation} |
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13 | p_i > p_F^{max}(r). |
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14 | \end{equation} |
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15 | |
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16 | If any of the nucleons of the collision has a momentum below the local Fermi |
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17 | momentum, then the collision is Pauli blocked. The reaction products are |
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18 | discarded, and the original particles continue the cascade. |
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