Regular mechanism of parity and time invariance nonconserving effects enhancement in neutron capture and scattering near p-wave compound resonances

Recent measurements of parity nonconserving (PNC) effects in ${}_{}{}^{238}{}_{}{}^{}\mathrm{U}$ and ${}_{}{}^{232}{}_{}{}^{}\mathrm{Th}$ contradict the results of random matrix theory for nuclear compound states. In this work the value of the PNC effect is expressed in terms of a wave function at the nuclear surface where the wave function of the compound state is not ‘‘random’’ due to boundary conditions. A mechanism is suggested which can explain the permanent sign and large value of these effects. The correlations between compound-state components are considered. The T- and P-odd effects can be expressed in terms of observed P-odd effects. The ‘‘dynamical enhancement’’ of small interactions in other reactions and other systems is also discussed.