Destruction of sodium lauryl sulfate in its aqueous solutions by contact glow discharge treatment

Degradation of the anionic surfactant sodium lauryl sulfate (C₁₂H₂₅SO₄Na, SLS) in its aqueous solutions with concentrations of 0.02–1.1 mmol/L acting as a liquid cathode of atmospheric-pressure dc discharge in air at a discharge current ranging within 20–100 mA has been studied. The products of degradation in the liquid phase have been identified, and the kinetic characteristics of their formation at an initial SLS concentration of 5 × 10^?3 g/L (～0.02 mmol/L) and a discharge current of 40 mA have been determined.     

Measurement of analyzing power for the reaction \vec p + CH_2 at polarized proton momentum of 7.5 GeV/c (ALPOM2 proposal)

An accurate data base for the analyzing power of thick CH₂ analyzers for high energy protons has been at the basis of several research efforts in a number of laboratories. Starting in the late eighties such data were collected at SATURNE in Saclay, and with the Synchrophasotron in Dubna, and led to an extensive program of study of polarization phenomena in pd interaction, either backward elastic scattering or breakup [1–6]. At about the same time it became evident that measuring polarization observables in elastic ep was going to be the best approach to determine the form factors of the proton, G _Ep and G _Mp , as had been predicted by Akhiezer and Rekalo [7].     

Growth of random plane graphs and packings

The process of growth of random graphs with the vertices lying at the points of the plane (i, j) with integral coordinates has been considered. Computer simulation of the process allowed us to establish that random graphs grow in the self-similar mode. The sectorial growth proceeds in such a way that the growth boundary in four sectors consists of two horizontal and two vertical linear segments; in the other four sectors, the boundary is a part of an ellipse; the real growth boundary lags behind the limited form to which it tends; the scatter interval along the principal growth diagonal is proportional to the cubic root of the number of the coordination sphere.     

Raman regime energy dependence of alignment and orientation of KrII states populated by resonant Auger effect

The energy dependencies of alignment parameters A20 for KrII 4p(4)5p states after the Auger decay of the KrI 3d(9)np resonances were investigated theoretically and experimentally for the first time in the Raman regime with the bandwidth of the exciting radiation (deltaE(FWHM)=20 meV) smaller than the natural width of the resonances (Gamma approximately 80 meV). The observed energy dependence is due to the in-terference between the different resonance channels and the direct photoionization channel. A strong energy dependence for both the orientation parameter O10 and the photoelectron angular distribution parameter beta(el) is also predicted.     

Numerical treatment of a finite strain viscoplasticity model based on a double multiplicative split

A viscoplastic material model of overstress type is analyzed. The model is based on the kinematic assumption of a double multiplicative split in order to simulate a nonlinear kinematic hardening. We investigate theoretically and numerically two implicit time–stepping methods, which were used lately in engineering literature to integrate the evolution equations in the context of multiplicative plasticity/viscoplasticity. A common feature of both methods is that the plastic incompressibility constraint is exactly satisfied. Moreover, we show that both methods preserve the symmetry of internal variables, which is inherent to the problem. According to testing results, both methods are equivalent regarding robustness, accuracy, and computational efficiency. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)     

Influence of Non-uniformity of Generation of Active Particles on Deposition Processes and Redox Reactions in a Glow Discharge in Contact with Water

Plasma Chemistry and Plasma Processing - The processes of formation of zinc hydroxide and the processes of oxidation–reduction of Cr6+ under action on water solutions of a direct current...     

Atom Probe Tomography Data Reconstruction with the Correction on Material Density

Physics of Atomic Nuclei - Data collected with an atom probe tomograph allow to reconstruct 3D atom maps of chemical element atoms with high accuracy. Due to the permanent improvement of AP...     

Ionization Mechanism and Chemical Composition of an Argon DC Discharge with Water Cathode

Plasma Chemistry and Plasma Processing - This paper reports the results of the experimental study and chemical composition modeling for a DC argon discharge burning above water cathode in the...