Hard Core Model
In the case of a 'hard core' repulsive model in which each molecule or atom consists of a hard core with an infinite repulsive potential, insertions in which two molecules occupy the same space will not contribute to the average. In this case the insertion parameter becomes
where is the probability that the randomly inserted molecule of species will experience and attractive or zero net interaction; in other words, it is the probability that the inserted molecule does not 'overlap' with any other molecules.
Read more about this topic: Widom Insertion Method
Famous quotes containing the words hard, core and/or model:
“Friendship is not so simple. It is hard to get and takes a long time, but when one ha it one cannot get rid of it, one has to face it.”
—Albert Camus (1913–1960)
“In the core of God’s abysm,—
Was a weed of self and schism;
And ever the Daemonic Love
Is the ancestor of wars,
And the parent of remorse.”
—Ralph Waldo Emerson (1803–1882)
“...that absolutely everything beloved and cherished of the bourgeoisie, the conservative, the cowardly, and the impotent—the State, family life, secular art and science—was consciously or unconsciously hostile to the religious idea, to the Church, whose innate tendency and permanent aim was the dissolution of all existing worldly orders, and the reconstitution of society after the model of the ideal, the communistic City of God.”
—Thomas Mann (1875–1955)