Найдено научных статей и публикаций: 1, для научной тематики: Electron-atom interaction
1.
Omarbakiyeva Y.A., Fortmann C., Ramazanov T.S., Roepke G.
- Physical Review E , 2010
We study the contribution of electron-atom interaction to the equation of state for partially ionized hydrogen
plasma using the cluster-virial expansion. We use the Beth-Uhlenbeck approach to calculate the second virial
coefficient for the electron-atom bound cluster pair from the corresponding sc...
We study the contribution of electron-atom interaction to the equation of state for partially ionized hydrogen
plasma using the cluster-virial expansion. We use the Beth-Uhlenbeck approach to calculate the second virial
coefficient for the electron-atom bound cluster pair from the corresponding scattering phase shifts and
binding energies. Experimental scattering cross-sections as well as phase shifts calculated on the basis of
different pseudopotential models are used as an input for the Beth-Uhlenbeck formula. By including Pauli
blocking and screening in the phase shift calculation, we generalize the cluster-virial expansion in order to
cover also near solid density plasmas. We present results for the electron-atom contribution to the virial
expansion and the corresponding equation of state, i.e. pressure, composition, and chemical potential as a
function of density and temperature. These results are compared with semiempirical approaches to the thermodynamics
of partially ionized plasmas. Avoiding any ill-founded input quantities, the Beth-Uhlenbeck
second virial coefficient for the electron-atom interaction represents a benchmark for other, semiempirical
approaches.