In this paper a theory developed by Stumpf [1] will be used in order to calculate Auger transi­ tion probabilities in semiconductors. The main feature of the calculations is the incorporation of the coupling of impurity electrons to the surrounding lattice by phonons, using dynamical elec­ tronic wave functions for impurity states. The final result is an expression for transition probabi­ litie...

Radiation therapy for cancer patients works by ionizing damage to nuclear DNA, primarily by creating double-strand breaks (DSB). A major shortcoming of traditional radiation therapy is the set of side effect associated with its long-range interaction with nearby tissues. Low-energy Auger electrons have the advantage of an extremely short effective range, minimizing damage to healthy tissue. Con...

The southern part of the Pierre Auger Observatory (PAO) is nearing completion in the province of Mendoza, Argentina. Since 2004 the instrument is used to take air shower data at the highest energies [1]. The energy threshold of the 3000 km2 surface array of 1600 particle detectors for high quality air shower reconstruction is about 3 . 10 eV. The 24 Auger fluorescence telescopes (FD), located i...

The Pierre Auger Observatory is a multi-national project for research on ultrahigh energy cosmic rays. The Southern Auger Observatory in Mendoza province, Argentina, is approaching completion in 2007 with an instrumented area of 3,000 km. It will accurately measure the spectrum and composition of ultra-high energy cosmic rays up to and beyond the predicted GZK feature. We are obtaining results ...

Relativistic calculations of nonradiative transition rates to K, L, and M -shell vacancy statesin Ni-, Cu-, and Zn-like ions with Z=32, 36, 42, 47, 56, 60, 66, 74, 83, and 92 are performed.Auger and Coster-Kronig transition probabilities are calculated using both Dirac-Hartree-Fockand model-potential wave functions. Tabulated data are presented for Kand L-shells Augerrates in Ni...

The technologically important prediction of Auger recombination lifetimes in semiconductors is addressed by means of a fully first-principles formalism, based on precise energy bands and wave functions provided by the full-potential linearized augmented plane wave code. The minority carrier Auger lifetime is determined by two related approaches: (i) a direct evaluation within Fermi's golden rul...