PROTON DECAY FROM EXCITED-STATES IN SPHERICAL NUCLEI

Based on a single-particle model which describes the time evolution of the wavefunction during tunnelling across a one-dimensional potential barrier we study the proton decay of Pb-208 from excited states with non-vanishing angular momentum l. Several quantities of interest in th is process such as the decay rate lambda, the period of oscillation T- osc, the transient time t(mu-), the tunnelling time tl,, and the avera ge value of the proton packet position r(av) are computed and compared with the WKB results.