Two-component exciton model

The exciton model of nuclear reactions with the distinguishability of protons and neutrons explicitly included is discussed. The Pauli master equation and transition rates in this two-component formulation are given. Both the simple considerations and actual calculations show that the two-component model exhibits new features and modifies conclusions of the one-component formulation. The ratio of the proton to neutron preequilibrium emissions in proton induced reactions decreases twice to three times when compared with the usual one-component model.

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