We consider the effect of reducing the density of final hole states for Auger processes on the Auger rate at room temperature and 77K at densities near lasing thresholds. The system of interest is a strain-compensated superlattice based on the InAs/GaInSb material system with a 3.7 microm band gap. At 77K the Auger lifetime is reduced by two orders of magnitude, while the change at 300K is less...

Radiative Auger spectra are weak X-ray emission spectra near the characteristic X-ray lines. Radiative Auger process is an intrinsic energy-loss process in an atom when a characteristic X-ray photon is emitted, due to an atomic many-body effect. The energy loss spectra correspond to the unoccupied conduction band structure of materials. Therefore the radiative Auger effect is an alternative too...

Auger recombination is a significant loss mechanism in many optoelectronic devices. We use first-principles methods based on density functional theory to study the relative importance of direct and indirect phonon-assisted Auger recombination in GaAs and related alloys. Energy and momentum of the recombining electron−hole pair can be transferred to an Auger electron (eeh process) or an Auger ho...

Different possible processes of non-radiative Auger recombination which occur in the active region of quantum-well lasers are analyzed and the temperature dependence of the lasing threshold in the GaInAs-GaInAsP-InP bi-quantum-well heterolasers with different widths of the quantum wells (4 and 9 nm) is determined. Activated behavior of the Auger recombination is mentioned and respective effecti...

In a molecular Auger spectrum information on the decaying state is implicitly ensemble-averaged. For a repulsive core-ionized state, for example, contributions from all parts of its potential curve are superimposed in the Auger spectrum. Using carbon tetrafluoride (CF4, tetrafluoromethane), we demonstrate for the first time that these contributions can be disentangled by recording photoelectron...

Introduction: Presolar grains have isotopic compositions that clearly identify them as stellar condensates which survived prolonged residency in the interstellar medium before being incorporated into Solar System materials. Many such grains are first identified during in situ isotope imaging searches in various types of primitive extraterrestrial materials. To constrain a given particle’s possi...

We measure the correlation between the arrival directions of the highest energy cosmic rays detected by the Pierre Auger Observatory with the position of the galaxies in the H I Parkes All Sky Survey (HIPASS) catalogue, weighted for their H I flux and Auger exposure. The use of this absorption–free catalogue, complete also along the galactic plane, allows us to use all the Auger events. The cor...

Supercell method is used to study the relaxation and screening effects during the Auger transition in metals. Our consideration is based on the assumption that when a core-hole exists long enough before the Auger transition occurs, the occupied valence states relax to screen the core-hole which results in a redistribution of the valence electrons, in particular within the atom that contains the...

We calculate electron-hole recombination rates for Auger scattering in Graphene. The conduction and valence band dispersion relation in Graphene together with energy and momentum conservation requirements restrict the phase space for Auger processes so that electron-hole recombination times can be much longer than 1 ps for electron-hole densities smaller than 1012 cm−2.

The long-heralded potential of targeted cancer treatment using monoclonal antibodies is finally being realized. Several antibodies are already used in the oncology clinic and many others are undergoing preclinical evaluation. In addition to the development of unconjugated antibodies, there is intense interest in the potential clinical use of antibodies as vehicles for targeting cytotoxic agents...