On compatibility — A proposed solution

The paper gives a definition of compatibility, and tries to answer the question why compatibility is of great importance. The paper also suggests a solution by using multilingual techniques in the creation of the complete system.     

Inclusive hadron production by e+e− annihilation for s between 13 and 25 GeV2

Charged hadron production via $\text{e}{}^{\mathrm{+}}\text{e}{}^{\mathrm{?}}\text{→}\text{h}{}^{\mathrm{\pm }}\text{X where h}{}^{\mathrm{\pm }}\text{= π}{}^{\mathrm{\pm }}\text{,}\text{K}{}^{\mathrm{\pm }}\text{,}\text{p}\text{?}$ has been measured for s values between 13 and 25 GeV². Inclusive cross sections and the evidence for scaling are presented.     

Measurement of e+e−→τ+τ− at high energy and properties of the τ lepton

The e⁺e^?→τ⁺τ^? process has been measured using the CELLO detector at a mean total centre of mass energy of 34.2 GeV using essentially all the decay channels of the τ lepton. The measured cross section yields R_τ=1.03±0.05 (stat)±0.07 (syst). Topological branching fraction are given for τ → 1, 3 or 5 charged tracks. The angular distribution shows a clear 1 + cos²θ dependance with a forward-backward asymmetry of -0.103 ± 0.052 corresponding to an axial-vector coupling a_τ of the τ to the weak neutral current given by a_τ=?1.12 ± 0.57.     

A missing allene of heavy Group 14 elements: 2-germadisilaallene

The first stable 2-germadisilaallene was synthesized by the reduction of a 2 ratio 1 mixture of a stable dialkylsilylene and dichlorogermylene-dioxane complex with KC8; the 2-germadisilaallene showed dynamic disorder similar to the corresponding trisilaallene in the solid state.     

Sol-gel synthesis of the lithium-ion conducting perovskite La0.57Li0.3TiO3 effect of synthesis and thermal treatments on the structure and conducting properties

The lithium ionic conducting perovskite La_0.57Li_0.3TiO₃ has been synthesised via a sol-gel method at a temperature of 700 °C. The crystallinity of the product can be greatly increased by further heat treatment at 1000 °C. In this paper the product of the sol-gel synthesis is compared with the product of conventional solid-state synthesis, and the influence of the synthesis method as well as of quenching on the crystal structure and ionic conductivity has been studied. AC-impedance measurements show two contributions to the ionic conductivity, which can be adscribed to intergranular and intragranular effects, respectively. A lower intergranular resistivity is observed for sol-gel samples, while quenching mainly affects the materials prepared by solid-state reaction. The crystal structure of the material prepared by the sol-gel method is identical to that of the material prepared by the solid state reaction, although the synthesis temperature is nearly 600 °C lower. A tetragonal superstructure is observed when either type of material is slowly cooled from 1300 °C. Quenching from the same temperature results in the suppression of that superstructure. Paper presented at the 3rd Euroconference on Solid State Ionics, Teulada, Sardinia, Italy, Sept. 15–22, 1996     

Characterization of disorder in semiconductors via single-photon interferometry

The method of angular photonic correlations of spontaneous emission is introduced as an experimental, purely optical scheme to characterize disorder in semiconductor nanostructures. The theoretical expression for the angular correlations is derived and numerically evaluated for a model system. The results demonstrate how the proposed experimental method yields direct information about the spatial distribution of the relevant states and thus on the disorder present in the system.