Rydberg plasma state diagram from cryogenic temperatures to 1000 K

Summary form only given. Ultracold Rydberg plasma was created by photoionization laser-cooled xenon atoms and alkaline atoms. In experiments electrons temperatures T/sub e/=0.1-10 K, densities n=10/sup 7/-10/sup 10/ cm/sup -3/. Rydberg plasma in was obtained at temperatures 500-1000 K and densities n=10/sup 16/-10/sup 19/ cm/sup -3/. Coulomb energy of interaction on the average distance between particles more than kinetic energy and electrons degeneration is low in these experiments. We employed pseudopotential model. Electron-electron, ion-ion and electron-ion interaction pseudopotentials are calculated. The thermodynamical equations of state and pair correlation functions are calculated by method Monte - Carlo in this range of temperatures and densities. It is found out that with an increment of the density is appeared short-range order of the particles. There are discussed the parameters of obtained Rydberg plasma structures in the densities range. In this work is proposed the diagnostic for experimental detection these Rydberg plasma structures.