Statistical model analysis of (n, α) reactions

Charged-Particle Emission Following Muon Capture in Complex Nuclei

“…There is no good treatment yet 18 for cluster emission from the pre-equilibrium stage, and moreover, for nuclei with A < 80 for which experimental data exist, 2 one expects compound-nucleus emission to dominate. 23 Our results confirm this assumption. Of special interest is the calculation of chargedparticle emission from the emulsion nuclei (Ag f Br), where spectra are also available.…”

“…We performed our calculations for x =p,n, using for (4) We did not use specific information for each nucleus; rather we employed the well-tested parametrization for the inverse-reaction cross section a x of Dostrovsky et al 22 For the level densi-ties we take _a l/2 exp[2(aU) l/2 \ p(lf)< A 5/2 (U+t) 2 (6) witha = A/10, U=at 2 -t, and U=E -B x -c x~ 6, 6 being the pairing energy. Equation (6) has been used successfully 23 for a wide range of nuclear reactions at comparable energies. The calculation of the statistical emission is done only for nuclei which reach the equilibrium state without prior emission, which we find to happen in 70%-80% of the cases.…”