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7 number 2006 year |
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1.
Title:
NORMAL OSCILLATIONS OF TWO-DIMENSIONAL DUST CLUSTERS
WITH A REGULAR POLYGON SHAPE WITH PARTICLE IN THE CENTER
Authors:
N.G. Gusein-zade, V.N. Tsytovich, S.G. Amiranashvili.
Abstract:
2.
Title:
RAYLEIGH LINE WING IN A SOLUTION
WITH A CLOSED PHASE SEPARATION REGION
Authors:
K.V. Kovalenko, S.V. Krivokhizha.
Abstract:
3.
Title:
EFFECT OF AN ELECTRIC FIELD ON OPTICAL INTERBAND TRANSITIONS
IN SEMICONDUCTOR HETEROSTRUCTURES
Authors:
P.V. Ratnikov, A.P. Silin.
Abstract:
4.
Title:
ELECTROINDUCED SELECTIVE DRIFT
OF AQUA-COMPLEXES IN SALT SOLUTIONS
Authors:
V.I. Boiko, M.A. Kazaryan, I.V. Shamanin, I.V. Lomov.
Abstract:
5.
Title:
UP-CONVERSION ENERGY TRANSFER FROM THE 4S3/2
LEVEL OF Er3+ IONS IN YAlO3 AND YLiF4 CRYSTALS
Authors:
V.P. Danilov, V.P. Kalinushkin, M.I. Studenikin.
Abstract:
6.
Title:
MEASUREMENT OF OPTICAL PATH LENGTH GRADIENTS USING CORRELATION PROCESSING OF DIGITAL PHOTOGRAPHS
OF RANDOM PATTERNS
Authors:
V.N. Borkova, A.V. Kraisky, T.V. Mironova, T.T. Sultanov.
Abstract:
7.
Title:
APPLICABILITY OF THE CONCEPT OF TOWNSEND COEFFICIENT
IN STRONG ELECTRIC FIELDS
Authors:
A.N. Tkachev, S.I. Yakovlenko.
Abstract:
An analytical expression is obtained for the electron-energy distribution function in a strong electric field. The derivation is performed in the assumption that the retardation force in the equation of motion for an individual electron in a gas can be ignored. The distribution characteristic width corresponds to the energy acquired by an electron at a distance equal to the reciprocal of the Townsend coefficient. Calculations of the energy distribution function are carried out for electrons multiplied as a result of gas ionization in a homogeneous electric field at different distances from the cathode. This distribution function normalized to unity is shown to be no longer coordinate-dependent at distances from the cathode exceeding greatly the reciprocal of the Townsend coefficient. This distribution function coincides with the analytical expression obtained. The behavior is coordinate-independent even in a very strong electric field when, in accordance with the traditional viewpoint, the majority of electrons are runaway ones.
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