Spin-orbit coupling elements for an avoided crossing



 Dear Netters,
    I would like to enquire if anybody has a program to calculate
 spin-orbit coupling elements for an avoided crossing of two
 potential energy curves.
 I would be grateful if any body could help me in this regard.
 Thanking you in advance.
 M.Krishnamrurthy,
 Tata Institute of Fundamental Reseach,
 Homi Bhabha Road,
 Bombay-5
 e-mail: MKRISM()at()tifrvax.tifr.res.in