The higher order C_n dispersion coefficients for the alkali atoms
| dc.creator | Mitroy, J. | |
| dc.creator | Bromley, M. W. J. | |
| dc.date | 2004-11-19 | |
| dc.date.accessioned | 2026-07-07T06:24:37Z | |
| dc.date.available | 2026-07-07T06:24:37Z | |
| dc.description | The van der Waals coefficients, from C_11 through to C_16 resulting from 2nd, 3rd and 4th order perturbation theory are estimated for the alkali (Li, Na, K and Rb) atoms. The dispersion coefficients are also computed for all possible combinations of the alkali atoms and hydrogen. The parameters are determined from sum-rules after diagonalizing the fixed core Hamiltonian in a large basis. Comparisons of the radial dependence of the C_n/r^n potentials give guidance as to the radial regions in which the various higher-order terms can be neglected. It is seen that including terms up to C_10/r^10 results in a dispersion interaction that is accurate to better than 1 percent whenever the inter-nuclear spacing is larger than 20 a_0. This level of accuracy is mainly achieved due to the fortuitous cancellation between the repulsive (C_11, C_13, C_15) and attractive (C_12, C_14, C_16) dispersion forces. | |
| dc.description | 8 pages, 7 figures | |
| dc.identifier | https://arxiv.org/abs/physics/0411174 | |
| dc.identifier | http://arxiv.org/abs/physics/0411174 | |
| dc.identifier | Phys.Rev.A 71 042701 (2005) | |
| dc.identifier | doi:10.1103/PhysRevA.71.042701 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/96603 | |
| dc.subject | Atomic Physics | |
| dc.subject | Chemical Physics | |
| dc.title | The higher order C_n dispersion coefficients for the alkali atoms | |
| dc.type | text |