Collision Rates in Charged Granular Gases
| dc.creator | Scheffler, T. | |
| dc.creator | Wolf, D. E. | |
| dc.date | 2002-08-14 | |
| dc.date.accessioned | 2026-07-07T02:46:51Z | |
| dc.date.available | 2026-07-07T02:46:51Z | |
| dc.description | The dissipation rate due to inelastic collisions between equally charged, insulating particles in a granular gas is calculated. It is equal to the known dissipation rate for uncharged granular media multiplied by a Boltzmann-like factor, that originates from Coulomb repulsion. Particle correlations lead to an effective potential that replaces the bare Coulomb potential in the Boltzmann factor. Collisional cooling in a granular gas proceeds with the known t^-2 -law, until the kinetic energy of the grains becomes smaller than the Coulomb barrier. Then the granular temperature approaches a time dependence proportional to 1/ln(t). If the particles have different charges of equal sign, the collision rate can always be lowered by redistributing the charge, until all particles carry the same charge. Finally granular flow through a vertical pipe is briefly discussed. All results are confirmed by computer simulations. | |
| dc.description | Submitted to "Granular Matter" | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0208288 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0208288 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/19786 | |
| dc.subject | Statistical Mechanics | |
| dc.title | Collision Rates in Charged Granular Gases | |
| dc.type | text |