Commands TURN and MINPOT
The command TURN invokes a simple search procedure to find the
classical turning point for the potential which is defined by the POT
subroutine which is linked in the currently executing scattering program. This information is
useful in the determination of the starting point for the integration of the
coupled equation, RSTART.
The turning point is estimated using the isotropic term in the
potential and a centrifugal barrier of
The command MINPOT invokes a simple search procedure to find the
minimum in the isotropic potential
where XMU is the collision reduced mass in atomic units.
Thus, to estimate
the turning point of V(R) alone, without any centrifugal barrier, set
JTOT1 = 0 before entering the command TURN.
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