centrifugal barrier

centrifugal barrier

[‚sen′trif·i·gəl ′bar·ē·ər]
(mechanics)
A steep rise, located around the center of force, in the effective potential governing the radial motion of a particle of nonvanishing angular momentum in a central force field, which results from the centrifugal force and prevents the particle from reaching the center of force, or causes its Schrödinger wave function to vanish there in a quantum-mechanical system.
References in periodicals archive ?
They are bound dynamically by the centrifugal barrier between the atoms, which make it spin around its parent nucleus for a tad bit longer than necessary.
Therefore, the penetration of the d-wave into the region near 75 [a.sub.0] is greatly reduced by the centrifugal barrier. In fact, full close-coupled calculations show that, for Na MOT temperatures, l > 1-wave wavefunctions outside of the barrier are almost independent of the shape of the electrostatic potentials inside the centrifugal barrier.
3.1, thc d-wave wavefunction is given by a spherical Bessel function, [j.sub.2](kR)/[square root of (k)] [right arrow] [k.sup.5/2][R.sup.2] as k [right arrow] 0, independent of the shape of the potential because the centrifugal barrier inhibits penetration of the wavefunction into the region of interest, as seen in Fig.