中性子入射による原子核の全反応断面積の謎を解く

抄録

Neutron induced total reaction cross-sections for various nuclei have a serious mystery. At the low incident energies, the cross sections fall off to zero. This behavior contradicted the naive expectation based on the nature of nuclear 2-body forces and had been a mystery for many years. For solving this mystery, we incorporated the quantum condition that the excited states are sparse in the low-energy region into the Internuclear Cascade model. As a result, the model incorporating this quantum condition successfully reproduced the experimental results and solved a long-standing mystery. This quantum condition is absolutely essential for neutron injection, but it is increasingly being confirmed that it is necessary for other projectiles as well.