Microbeam therapy is established as a general concept for brain tumour treatment. A synchrotron based x-ray source was chosen for experimental research into microbeam therapy, and therefore new simulations were essential for investigating the therapy parameters with a proper description of the synchrotron radiation characteristics. To design therapy parameters for tumour treatments, the newly u...

INTRODUCTION Small angle, between 3 degrees and 10 degrees, X ray scattering is predominantly coherent giving rise to diffraction effects that can be observed as constructive and destructive interferences. These interferences carry information about the molecular structure of the tissue and hence can be used to identify changes that occur due to cancer. METHOD In this study an energy dispersi...

EXAFS studies on dilute samples are usually carried out by collecting the fluorescence yield using a large-area multi-element detector. This method is susceptible to the 'glitches' produced by all single-crystal monochromators. Glitches are sharp dips or spikes in the diffracted intensity at specific crystal orientations. If incorrectly compensated, they degrade the spectroscopic data. Normaliz...

We reanalyze literature data on neutron scattering by liquid metals and show that there is an additional broad (in energy) quasielastic mode present that is absent in x-ray scattering. This mode cannot be accounted for by the standard coherent and incoherent scattering mechanisms. We argue that this mode indicates that nonmagnetic liquid metals possess a magnetic moment which fluctuates on a pi...

We review coherent scattering of neutrinos on nuclei by coupling the weak currents to vector and axial-vector meson states. The couplings are obtained from known reactions, like τ–lepton and vector meson decays. We compute and present the cross sections as functions of energy and momentum transfer for various kinematic regions, including those which are relevant to oscillation experiments. The ...

A theory of coherent X-ray radiation generated by a beam relativistic electrons in single crystal the direction close to electron-beam axis is developed Laue scattering geometry. The takes into account asymmetry electron-field reflection with respect surface and divergence. Expressions describing spectral-angular densities parametric near electron-velocity direction, transition radiation, their...

Abstract Bismuth germanium oxide (Bi 4 Ge 3 O 12 , BGO) scintillation crystals are widely used as detectors in the fields of particle physics and astrophysics due to their high density, thus higher efficiency for gamma-ray detection. Owing good chemical stability, they can be any environment. For rare-event searches, such dark matter coherent elastic neutrino-nucleus scattering, BGO essential c...