How to interpret lambda diagnostic in gamess TDDFT calculation..?

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Bradley D Rose

The GAMESS manual is your friend.

"The "lambda diagnostic" is described by

M.J.G.Peach, P.Benfield, T.Helgaker, D.J.Tozer

J.Chem.Phys. 128, 044118/1-8(2008)

This is a criterion for separating valence states from

charge transfer and Rydberg states."

This paper clearly describes what lambda is and how it can be used.

Oscillator strength is directly related to the transition dipole moment.

Iresh Gallindawatte

Thanks in advance Bradley D Rose, It is a great clue .