Plasma-chemical and hydrometallurgical processes for the synthesis of nanostructures from natural crystalline graphite

A flow chart for the extraction of high-purity (99.98%) crystalline graphite by hydrometallurgical methods from the high-carbon rocks of the Ruzhinskaya area was developed. The graphite was used as the starting material for plasma-chemical tests. Nano-sized carbon nanomaterials were isolated upon the experiment. Some of them could be inherited from the natural graphite-bearing rocks. The results of investigation will be used in the development of resource-saving process for extraction of useful components.     

Polarization in elastic eD-scattering at large transfer momenta and quark structure of the deuteron

It is shown that a small (5–8)% admixture of the six-quark component in the deuteron wave function which is to be introduced to describe elastic eD-scattering at large transfer momenta changes essentially the behaviour of the polarization tensorT ₂₀ and the ratioR of the vectorP _x to tensor polarizationP _xz compared to the models which do not take such admixtures into account. The corresponding experiments are emphasized to be important, which are aimed at testing the predictions of models including six-quark admixtures in the deuteron.     

Form factors and polarization in the elasticeD-scattering with inclusion of meson and quark degrees of freedom in a deuteron

A detailed analysis is made of the pair,ρπγ-currents, retardation effects and six-quark admixtures to the charge, quadrupole form factors and to the deuteron polarization. It is shown that the elasticeD-scattering cross section allowing for the meson exchange currents can be described by introducing a six-quark admixture with probability 3.5%. It is predicted that the behaviour of the deuteron polarization tensor at q>4 fm^?1 essentially depends on 6q-admixture.     

Structure functions of the deuteron and meson exchange currents

The deuteron structure functionsA(q ²)B(q ²) and polarization tensorT(q ²) are studied within the Bonn model with meson exchange currents taken into account. It is shown that it is necessary to take all these currents into consideration including the retardation effects. ForA(q ²) the contribution of retardation effects does not depend on the choice of vertex form factors; whereas forB(q ²) it essentially depends on the choice of strong vertices. The best agreement with experiment is achieved for the Bonn relativistic potential.Dedicated to the memory of M. Gmitro.