intermolecular force

(redirected from Interatomic force)

intermolecular force

[‚in·tər·mə′lek·yə·lər ′fōrs]
(physical chemistry)
The force between two molecules; it is that negative gradient of the potential energy between the interacting molecules, if energy is a function of the distance between the centers of the molecules.
References in periodicals archive ?
Objective: The development of ultrafast experimental techniques with femtosecond time resolution is driving the need for deeper theoretical understanding of how intense optical excitation can alter the interatomic forces, drive atomic motion and effect structural changes in materials.
In this model, besides interatomic forces between atoms, the relative sub-lattices motion is taken into account to describe structural deviations in the bi-atomic lattice.
Pritchard and his collaborators hope to improve the sensitivity of their method to extract other details of the interatomic forces governing collisions between different atoms.