The production of K-mesons in pA (A = D, C, Cu, Ag, Au) collisions has been investigated at the COoler SYnchrotron COSY-Jülich for beam energies Tp = 1.0 − 2.3 GeV. Double differential inclusive pC cross sections at forward angles θK+ < 12 ◦ as well as the target-mass dependence of the Kmomentum spectra have been measured with the ANKE spectrometer. Far below the free NN threshold at TNN = 1.58...

We propose to modify the saturation model of Golec-Biernat and Wüsthoff by including DGLAP evolution. We find considerable improvement for the total deep inelastic cross section, in particular in the large Q region. The successful description of DIS diffraction is preserved. The saturation model [1, 2, 3] has provided a successful description of HERA deep inelastic scattering data, in particula...

An eigenchannel R-matrix expansion of the T matrix is used to calculate total integrated and ejected energy differential cross sections for the electron-impact ionization of hydrogen in the Temkin-Poet model. In previous close-coupling results, unphysical oscillations in the total ionization cross section could be averaged over due to the smooth dependence of the cross section on the incident e...

2D photonic crystal which comprises a periodic array of parallel lated dielectric constants and in [16, 20] for a periodic array rods of air of a square cross section embedded in a background of parallel dielectric rods of circular cross section whose lossless medium of higher dielectric constant. The numerical analyintersections with perpendicular planes form a triangular sis of dependence of ...

In this paper we report positron lifetime results obtained under high-power steady-state and transient optical excitation. We present a model to analyse the results. The method has been applied to vacancy clusters in natural diamond, for which we self-consistently analyse optoelectronic constants such as optical absorption cross section and hole recombination cross section. The temperature depe...