Coulomb blockade of proximity effect at large conductance

We consider the proximity effect in a normal dot coupled to a bulk superconducting reservoir by the tunnel contact with large normal conductance. Coulomb interaction in the dot suppresses the proximity minigap induced in the normal part of the system. We find exact expressions for the thermodynamic and tunneling minigaps as functions of the junction's capacitance. The tunneling minigap interpolates between its proximity-induced value in the regime of weak Coulomb interaction to the Coulomb gap in the regime of strong interaction. In the intermediate case a nonuniversal two-step structure of the tunneling density of states is predicted. The charge quantization in the dot is also studied.     

Coherent radiation in time separated fields

This paper reports on an experimental observation of coherent radiation after interaction with two standing-wave pulses having the time delayT in an absorbing rarefied gas. The radiation appears at the time 2T, 3T,... after the first pulse. The coherent radiation arises due to spacial transfer of polarization and to formation of a spacial polarization harmonic owing to a phase jump after two-photon interaction with the field of the second pulse. We observed intensity oscillations with frequency tuning of the exciting laser, varying the time delay between pulses. The paper was reported at theVth Vavilov Conference, Novosibirsk, USSR (June 1977)     

On the redistribution of dislocations in silicon single crystals in the vicinity of stress concentrators

The mechanism of relaxation of stresses through the multiplication and motion of dislocations in the vicinity of a stress concentrator (scribe) in silicon single crystals is investigated. The energy-related and dynamic characteristics of the observed processes are determined for different angles of orientation of stress concentrators with respect to the [110] direction.     

Construction of the Delaunay Superlarge Triangulation

The problem of constructing the Delaunay triangulation that certainly cannot be put in the RAM is considered. A box algorithm that allows the dimensionality of the examined problem to be reduced from N to 3.23·N ^2/3 is suggested.     

Thermodynamics of Dissolution for Crystalline Racemic Tartaric and Glutaric Acids and Isatin in KOH Aqueous Solutions at 298.15 K

Enthalpies of dissolution are found for crystalline racemic tartaric and glutaric acids and isatin in water and in potassium hydroxide solutions at 298.15 K via direct calorimetry. The protolytic equilibria in isatin aqueous solutions are studied at 298.15 K and ionic strengths of 0.5 (relative to potassium nitrate) by potentiometric means. Standard enthalpies of formation are calculated for racemic tartaric and glutaric acids, isatin, and the products of their dissociation in aqueous solutions.     

Synthesis,structure and magnetic properties of the dinuclear complex [1,3-C6H4{NC(Ph)N(SiMe3)}2]3Dy2 coordinated by ansa-bis(amidinate) ligands with a m-phenylene linker

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Study of relaxation of molecular iodine by the method of saturated absorption spectroscopy

The paper describes detailed experimental studies of the width, shape and shifts of saturated absorption resonances at the X(v=0, j=13)B(v=43, j=12) transition of molecular iodine. Use of the geometry of oppositely travelling and unidirectional waves in the experiment and study of the luminescence decay under pulsed excitation allowed estimation of the cross-sections of elastic and inelastic scattering of I₂ molecules on the upper and lower levels of transition. The observed nonlinear dependence of width and shift of the saturation resonance on iodine pressure is explained by the influence of elastic collisions with no phase mismatch.