Command PSI


The command PSI allows you to determine the scattering wavefunction from data stored during a previous calculation. Specifically this command will determine and write out one column of the F(R) matrix defined in the help file which describes the close coupling method.

The command line syntax is line is

where The INITIAL-J, INITIAL-L, and INITIAL-IND indices specify which column of the F(R) matrix is selected. In addition, the only components (row elements) of this column which are written out are those for which the rotational angular momenta and additional indices are specified in the arrays JOUT and INDOUT

All selected components of the scattering wavefunctions are written to the file {jobname}.psi. The output is two successive matrices, corresponding, respectively, to the real and imaginary parts of F(R). The rows correspond to the successive values of R and the columns, to the components of F(R) which have been selected as described in the preceding paragraph.

The wavefunction is determined at all values of R lying between RSTART and RENDAI, with the grid size and spacing controlled by the same parameters which govern the LOGD and AIRY integration, namely SPAC, FSTFAC, TOLAI, and RINCR. In the output file {jobname}.psithe points that correspond to the AIRY integration range (RENDLD < R < RENDAI) are designated with negative value of R.

It is essential that SPAC be signficantly less than the DeBroglie wavelength (which can be determined with the command DEBROGLI) is order to get a meaningful representation of the wavefunction.


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