3.1.0.1 Example 1 : ⁴He+⁵⁸Ni at $E_{lab}=10.7\,\textrm {MeV}$

As an example we have taken the reaction ⁴He+⁵⁸Ni at $E_{lab}=10.7\,\textrm {MeV}$. The radial part of the Schrodinger equation was integrated using an step of HCM=0.1 fm and a matching radius RMATCH=25 fm. A total of JMAX=30 partial waves was used. Looking at the output file, it can be seen that the S-matrix is basically one for partials waves around J=30, indicating the convergence of the sum of partial waves. Notice that the trace variable SMATS has been set to 2, in order to get in the output the S-matrix values. The optical potential used consists of two components:

i) the Coulomb potential, specified by the line:

&POT kp=1 type=0 itt=F at=58 rc=1.4 /

ii) a volume Woods-Saxon nuclear potential, with both real and imaginary components.

&POT kp=1 type=1 itt=F p1=191.5 p2=1.37 p3=0.56 p4=23.5 p5=1.37 p6=0.56

The variables p1,p2 and p3 (p4,p5,p6) specify the depth, radius and diffusiveness of the real (imaginary) nuclear potential.

Notice that in this kind of calculations, the overlap and couplings namelists are left empty.