Electron kinetic energy density

Definition:

N - number of electrons in the molecule

Y - electronic wave function of the molecule

Reference:

1. C. M. Breneman, M. Martinov, in: Molecular Electrostatic Potentials: Concepts and Applications, Theoretical and Computational Chemistry, Volume 3, J. S. Murray, K. Sen (Eds.), Elsevier Science B.V., Amsterdam, 1996.