ISSN:
1434-601X
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract Differential cross sections for elastic scattering of Na(3s) from Ar and Ne were measured with an angular resolution of 0.1° in a range of relative energies between 5 and 20×10−14 erg. Excellent agreement is found between our experimental data for the Na-Ar system and calculated scattering patterns based on a model potential given by Düren et al. [3] with a well depth of ɛ=0.82×10−14 erg and an equilibrium distancer m =5.09×10−8 cm. The spectroscopically determined potential of Tellinghuisen et al. [9] is less suited to interpret our measurements; its repulsive branch has to be shifted to largerr-values by about 0.05×10−8cm. By comparing our Na-Ne measurements with calculations based on model potential of Masnou-Seeuws et al. [7] and of Peach [6] we find that both potentials are too soft in their repulsive part. The best fits to our measurements are obtained with an empirical potential with ɛ=0.16×10−14 erg, as obtained from spectroscopic data,r m =5.35(5)×10−8cm and a repulsive part which is significantly steeper than obtained from model potential calculations.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01414053
