Spherical analyzers are well known instruments for inelastic X-ray scattering (IXS) experiments. High-resolution IXS experiments almost always use Si single crystals as monochromators and spherical analyzers. At higher energies (>20 keV) Si shows a high energy resolution (<10 meV), at an exact symmetric back-diffraction condition, since the energy resolution is given by the real part of the sus...

Very-high-energy-resolution measurements using X-rays can be achieved by extreme backreflection (Bragg angle close to 90°) f rom perfect crystals. This technique allowed the development of the instrument INELAX for inelastic scattering experiments at the HARWI wiggler at DORIS, DESY Hamburg. Recently, a high energy resolution of 9 meV could be achieved, and the instrument proved to be an excell...

A central problem in wireless packet networks is the efficient resolution of collisions among nodes with independent transmission schedules. Natural metrics for measuring the efficiency of any collision resolution scheme include total time taken for collision resolution, average participation time of each transmitter during contention resolution, average number of transmissions made by a transm...

In the field of gamma-rays Astrophysics in the – energy domain, the understanding of spectra of detected gamma rays is necessary in developing models for acceleration, emission, absorption and propagation of very high energy particles in their sources and in space. Therefore, high precision in the measurement of the energy of observed gammas is important. On the example of the 17 ø MAGIC telesc...

Images from the GOES 8 satellite were used along with auxiliary information such as snow cover to produce an hourly solar radiation database on a 0.1° grid for the Pacific Northwest from 1998 through 2002[1]. Both global and beam irradiance values were derived from the satellite images and diffuse values were calculated from the beam and global values. Data from the University of Oregon Solar R...

The electromagnetic sampling calorimeters of the SPD experiment (NICA collider) are being investigated by Monte Carlo method. simulation is used to study in detail influence energy leakages from module on its resolution. values stochastic and constant terms obtained for calorimeter prototypes.