pw3d.m

求解量子力学的薛定谔方程

%> The file <pw3d.m>  calculates partial, total, and differential cross
%> sections for a central potential specified by a string, and for
%> a range of wave numbers for the incident particle. 
%> You must choose a coordinate where the potential has reached it磗
%> asymptotic (zero), value, and where boundary conditions can be applied.
%> Also choose a range of wave numbers. 
%> It calculates the partial cross section for a given L, starting with
%> L = 0, you can step forward in L and stop when the cross sections become
%> negligible in the chosen interval.
%> The program can also calculate the first Born approximation.
%> The radial Schrodinger equation, with potential defined on [0,infinity]
%> by defined by a string, and the L-dependent centrifugal part added. 
%> BC: consistent with Bessels at x=0 and x=A. The parameter A should be 
%> chosen such that the potential is essentially zero outside x=A.
%> Integration method: Numerov algorithm.
%>
%>