在Feshbach-Kerman-Koonin多步理论中P及Q空间的跃迁

存在直接作用时, 在哈密顿量中将包括非对角元, 并导致Feshbach,Kerman和Koonin预平衡反应多步复合理论中P和Q空间的耦合, 得到了理论上更严格的Feshbach, Kerman和Koonin预平衡反应多步复合理论与复合核反应Hauser-Feshbach理论的统一表示, 也改进了与实验结果的符合.

Transition between P and Q Spaces in Feshbach-Kerman-Koonin Theory

The off-diagonal components of Hamiltonian was considered in the Feshbach-Kerman-Koonin multi-step compound theory (FKK-MSC) of the pre-equilibrium reaction to induce the coupling between P and Q spaces in addition to the direct and the multi-step direct reactions. The transition from P to Q chain was introduced in an improved FKK-MSC formula, which can give a unified expression for FKK-MSC theory of pre-equilibrium reaction and Hauser-Feshbach model of the compound nucleus reaction (CN). The FKK-MSC theory was further refined. The calculated results shows that after considered the transition from P to Q chain, the FKK-MSC cross sections become smaller and the CN cross sections become greater than former analyses and they give a good agreement with the experimental results.