نتایج جستجو برای: elastic scattering spectroscopy
تعداد نتایج: 338154 فیلتر نتایج به سال:
The numerical treatment of the elastic scattering based on the McIntyre parameterization of scattering matrix elements for heavy ions is used to analyze the available angular distributions for 16O+64Zn elastic scattering. The best agreement between the theoretical and experimental angular distributions of this scattering at different incident energies is reached using three parameters only. The...
The numerical treatment of the elastic scattering based on the McIntyre parameterization of scattering matrix elements for heavy ions is used to analyze the available angular distributions for 16O+64Zn elastic scattering. The best agreement between the theoretical and experimental angular distributions of this scattering at different incident energies is reached using three parameters only. The...
Herein is presented a review of recent technical advances in Raman and nuclear resonance spectroscopy (both Mössbauer spectroscopy and nuclear resonant inelastic Xray scattering spectroscopy (NRIXS)), as they have great implications for geoscience. Optical and X-ray spectroscopies probe different momentum and energy transfers caused by interactions between the incident light and the lattice, ma...
Optical contrast based on elastic scattering interactions between light and matter can be used to probe cellular structure, cellular dynamics, and image tissue architecture. The quantitative nature and high sensitivity of light scattering signals to subtle alterations in tissue morphology, as well as the ability to visualize unstained tissue in vivo, has recently generated significant interest ...
2014 We measured the depolarized Rayleigh light scattering by water from 80°C down to 17°C. The spectra obtained could be analysed into two lines, a broad and a sharp one. From the sharp line we deduced a relaxation time which can be interpreted as a reorientational time due to rotations. The broad line gives a relaxation time which is Arrhenius temperature dependent, with an activation energy ...
Brillouin spectroscopy has been used to characterize shear acoustic phonons in materials. However, conventional instruments had slow acquisition times over 10 min per 1 mW of input optical power, and they required two objective lenses to form a 90° scattering geometry necessary for polarization coupling by shear phonons. Here, we demonstrate a confocal Brillouin microscope capable of detecting ...
Resonant (elastic) soft x-ray scattering (RSXS) offers a unique element, site and valence specific probe to study spatial modulations of charge, spin and orbital degrees of freedom in solids on the nanoscopic length scale. It is not only used to investigate single-crystalline materials. This method also enables one to examine electronic ordering phenomena in thin films and to zoom into electron...
This is a study of elastic waves diffracted by corrugated metallic surfaces. The corrugations consist of triangular grooves with variable parameters. The results of the narrow band experiments show significant diffraction patterns depending on angle and frequency. In addition, a continuous schlieren system is used to visualize the diffracted orders. Measurements were also carried out using a br...
Single-molecule scanning tunneling spectroscopy (STS), with dephasing due to elastic and inelastic scattering, is of some current interest. Motivated by this, we report an extended Hückel theory (EHT)-based mean-field non-equilibrium Green’s function (NEGF) transport model with electron–phonon scattering treated within the self-consistent Born approximation (SCBA). Furthermore, a procedure base...
Do halo nuclei follow Rutherford elastic scattering at energies below the barrier? The case of 11Li.
The first measurement of the elastic scattering of the halo nucleus 11Li and its core 9Li on 208Pb at energies near the Coulomb barrier is presented. The 11Li+208Pb elastic scattering shows a strong reduction with respect to the Rutherford cross section, even at energies well below the barrier and down to very small scattering angles. This drastic change of the elastic differential cross sectio...
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