Dean Cvetko, 2, 3, ∗ Guido Fratesi, 5, † Gregor Kladnik, 3 Albano Cossaro, Gian Paolo Brivio, Latha Venkataraman, 7, ‡ and Alberto Morgante 8 Physics Department, Faculty of Mathematics and Physics, University of Ljubljana, Slovenia Jozef Stefan Institute, Ljubljana, Slovenia CNR-IOM, Laboratorio TASC, Basovizza, Trieste, Italy Dipartimento di Fisica, Università degli Studi di Milano, Italy Dipa...

Ultrafast interfacial electron transfer in sensitized solar cells has mostly been probed by visible-to-terahertz radiation, which is sensitive to the free carriers in the conduction band of the semiconductor substrate. Here, we demonstrate the use of deep-ultraviolet continuum pulses to probe the interfacial electron transfer, by detecting a specific excitonic transition in both N719-sensitized...

For the Linac II, which supplies the accelerator chain at DESY with electrons and positrons, a new injection system is planned. It is supposed to ensure reliable operation and to avoid the beam loss of about 60% before the positron converter and the associated activation. The main components are a 6 A/100 kV triode gun, buncher and a dispersive section for energy collimation. The output energy ...

The creation of an electron space charge in a dipole magnetic trap and the subsequent injection positrons has been experimentally demonstrated. Positrons (5eV) were magnetically guided from their source injected into trapping field generated by permanent magnet (0.6T at poles) using cross E $\times$ B drift, requiring tailored electrostatic fields. cloud is created thermionic emission tungsten ...

Particle energization in shear flows is invoked to explain non-thermal emission from the boundaries of relativistic astrophysical jets. Yet, physics particle injection, i.e., mechanism that allows thermal particles participate shear-driven acceleration, remains unknown. With particle-in-cell simulations, we study development Kelvin-Helmholtz (KH) instabilities seeded by velocity between a magne...

Laser wakefield acceleration in crystals is studied with bound electron effects included PIC simulations; energy dissipation, drive laser deflection, and continuous injection due to Bragg scattering are found.

A novel laser-plasma-based source of relativistic electrons is described. It involves a combination of orthogonally directed laser beams, which are focused in a plasma. One beam excites a wakefield electron plasma wave. Another locally alters the trajectory of some of the electrons in such a way that they can be accelerated and trapped by the wave. With currently available table-top terawatt la...

Purpose – The purpose of this paper was to present the results of the three types of FG transistors that were investigated. The reliability issues of oxide thickness due to programming, fabrication defects and process variation may cause leakage currents and thus charge retention failure in the floating gate (FG). Approach – The tunnelling and electron injection methods were applied to program ...

Abstract This work is a continuation of previous effort (Panaitescu) to study the cooling relativistic electrons through radiation (synchrotron and self-Compton) emission adiabatic losses, with application spectra light curves synchrotron gamma-ray burst (GRB) produced by such electrons. Here, we derive low-energy slope β LE GRB pulse- integrated spectrum quantify implications measured distribu...