BULLETIN OF THE LEBEDEV PHYISICS INSTITUTE
P.N.Lebedev Physics Institute of the Russian Academy of sciences

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1. Title:
RAMAN SCATTERING BY THE TRANSVERSE AND A1-TYPE LONGITUDINAL MODES IN LITHIUM NIOBATE
Authors:
V.S. Gorelik, A.L. Karuzskii, A.V. Perestoronin, P.P. Sverbil.



Abstract:


2. Title:
THE CALCULATION OF COULOMB RADIAL MATRIX ELEMENTS
Authors:
I.L. Beigman, L.A. Vainshtein, S.V. Kostin.



Abstract:


3. Title:
AN INCREASE IN THE CRITICAL-CURRENT DENSITY IN HTSC CERAMICS Bi(2223) AS A RESULT OF MELTING WITH A CO2 LASER AND A SUBSEQUENT SHORT-TERM ANNEALING
Authors:
G.N. Mikhailova, A.M. Prokhorov, A.V. Troitskii, B.P. Mikhailov, D.I. Grigorashev, P.E. Kazin, V.V. Lennikov, T.D. Aksenova.



Abstract:


4. Title:
ELECTRON-BEAM EXCITATION OF SLOW COMPONENTS OF A THREE-DIMENSIONAL SOLITON-LIKE WAVE STRUCTURE IN A BULK COPPER SAMPLE
Authors:
E.M. Kudryavtsev, A.V. Varava, A.V. Dedov, A.T. Komov.



Abstract:


5. Title:
DISPERSION EQUATION FOR THE RADIATIVE PIERCE INSTABILITY
Authors:
D.N. Klochkov, M.Y. Pekar, A.A. Rukhadze.



Abstract:


6. Title:
SLOW COLLISIONS IN THE COULOMB REPULSIVE FIELD AND THE ZERO-RADIUS POTENTIAL: BARRIER PENETRATION FACTOR
Authors:
L.P. Presnyakov, A.N. Starostin, D.B. Uskov.



Abstract:
An exact (in the context of the given model) wave function of the continuum, which coincides with the Green function of the Coulomb field, is employed in the scattering problem with the Coulomb repulsive field and the zero-radius potential. It is used to calculate the barrier penetration factor for s-wave scattering by conventional rules of the R-matrix theory. The conditions for the model applicability in specific physical problems are discussed.