TEMPORAL DESCRIPTION OF INTERFERENCE PHENOMENA IN NUCLEAR REACTIONS WITH TWO-PARTICLE CHANNELS

Abstract

A self-consistent space-time analysis (made in the laboratory system) of the interference between non-resonant (prompt) and resonant (delayed) processes in nuclear reactions with two-particle channels, leads to a generalization of the expressions obtained (in the center-mass system) in the framework of an almost stationary formalism. The role of a new phase parameter φ, which describes the space-time shifts between the sources of the final-particle emission caused by the motion in the laboratory system of the decaying compound-nucleus, is analyzed. We find that in many realistic cases (when φ ~ 1) the effect related to this motion produces noticeable changes in the cross-sections.