For a Boltzmann distribution function, neglecting collisions and in the presence of a longitudinal external magnetic field, the self-consistent equilibrium configuration is found for a plasma with components s; this configuration represents an infinitely extended plane layer consisting of periodically recurring quasi-filaments of current for each of which the Bennett self-focusing condition I = 2 θs/qsβs is fulfilled. The filaments may be considered the result of the continuous topological transformation of a homogeneous plane layer having the characteristic dimension kg02 = 2 π n0 Σ (qs2 βs2/θs2) since the condition indicated is fulfilled for an element of the homogeneous layer in the range —∞≤ x ≤∞, —π/kg0 ≤ y ≤ π/kg0. During this transformation the characteristic dimensions, the total current and the energy of the y component of the magnetic field of the filaments remain constant. With increasing depth of the modulation, characterized by the parameter only the energy of the x component of the magnetic field grows (proportionally to y in the linear case).The authors examined the stability of a homogeneous plane layer with respect to perturbations of the type jz=jz(x) exp (ωt+i ky), as well as the factors giving rise to filaments and their in high current discharge processes.

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Micro column exclusion chromatography (MEC) Laser refractometric detector (LR-1)Exclusion chromatography on microcolumns 0.5-1 mm in diameter is an efficient and very economical method of investigating molecular-weight distribution (MWD) of polymers. In fact, the application of columns of 0.5 -1 mm instead of 4 mm in diameter makes it possible to reduce the consumption of sorbent and eluent by a factor of 25-100 thus permitting the use of any solvents, even very expensive ones, under rigorous conditions of toxic and fire safety.

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Neglecting collisions, we consider a kinetic approximation for the Boltzmann function of particle distribution with a longitudinal macroscopic velocity that does not depend on the coordinates. With it we solve the two-dimensional problem (∂/∂x≠0, ∂/∂y≠0, ∂/∂z=0) of the equilibrium configurations of an l-component plasma in self-consistent internal and external transverse magnetic fields (and also in electric fields caused by a non-compensation of plasma charge as a whole).The solution obtained with the given assumptions is a general one and permits one to make a broad analysis of equilibrium plasma configurations with longitudinal currents in self-consistent external and internal transverse fields. It is shown that existence of steady plasma states with a spatial-periodic structure is possible. This corresponds to the data of experiments in which it has been reliably established that a plasma arising in pinch discharges has a fibrous structure characterized by a definite space periodicity.