Positron annihilation in one component quantum and classical rare hot plasmas

Abstract

Temperature dependent positron annihilation rates λ, which are intimately related to the static pair correlation function of the electrons at the site of the positron g ±(0), have been worked out for electron densities that can be obtained in a laboratory plasma, making use of the recently suggested frequency and wavevector dependent dielectric function for one component quantum and classical rare hot plasmas. For a given density of electrons, the temperature dependence of g ±(0) in the two cases is quite different for low temperatures, T less than ∼100 K and can be detected experimentally.