Particle identification with the ATLAS electromagnetic calorimeter

The design constraints and the target performances of the ATLAS electromagnetic calorimeter are reviewed. The construction and installation status is summarized. Some test-beam results, covering a large part of the final detector, are summarized. Some recent updates concerning the use of the electromagnetic calorimeter for particle identification ($\gamma/\pi^0$, $e/\pi$ and jet/$\pi$ separation) are summarized

Review of Rare and Forbidden τ\tau Decays

This is a review of rare and forbidden decays of the $\tau$ lepton. For the rare decays, this includes new results on the chiral anomaly decay \taupietapio, new upper limits on the second-class-current decay \taupieta, and the observations of the Cabibbo-suppressed decay \tauketa and the internal conversion decay \taueee. For the forbidden decays, there are new upper limits on the radiative decays \tauegamma and \taumugamma. Some forbidden decays which have not been previously searched for are also suggested

Domaine public et biens communs de la connaissance

Mémoire de fin d\u27étude du diplôme de conservateur, promotion 22 portant sur la remise en cause de l\u27économie traditionnelle du savoir par le collectif SavoirsCom1

Numériser et mettre en ligne des archives personnelles dans un établissement public (aspects juridiques)

La Fiche explore les aspects juridiques liés à la numérisation et la mise en ligne des archives personnelles pour un établissement public. Cela implique les précautions à prendre dans le cadre d’une opération de numérisation, ainsi que les conditions de réutilisation des documents numériques

Blue-emission tuning of perovskite light-emitting diodes with a simple TPBi surface treatment

We demonstrate a simple approach for blue-emission tuning of quasi-2D perovskite light-emitting diodes through a surface treatment of 2,2′,2″-(1,3,5-benzinetriyl)tris(1-phenyl-1H-benzimidazole) (TPBi). By increasing the TPBi concentration, we achieved tunable electroluminescence of the perovskite layer with wavelength shifted from the blue-green (506 nm) to blue (481 nm) regions of the visible spectrum. Fourier-transform infrared spectroscopy, scanning electron microscopy, and UV–Vis absorption spectroscopy were conducted to study the morphological and optoelectronic properties of the films. Our results suggest that the TPBi molecules accumulated on the surface and grain boundaries of the perovskite layer changed the perovskite electronic structure causing the observed blue shifts