منابع مشابه
SPHERES, Jülich's high-flux neutron backscattering spectrometer at FRM II.
SPHERES is a third-generation neutron backscattering spectrometer, located at the 20 MW German neutron source FRM II and operated by the Jülich Centre for Neutron Science. It offers an energy resolution (fwhm) better than 0.65 μeV, a dynamic range of ± 31 μeV, and a signal-to-noise ratio of up to 1750:1.
متن کاملSimulation-guided optimization of small-angle analyzer geometry in the neutron backscattering spectrometer SPHERES.
The resolution of neutron backscattering spectrometers deteriorates at small scattering angles where analyzers deviate from exact backscattering. By reducing the azimuth angle range of the analyzers, the resolution can be improved with little loss of peak intensity. Measurements at the spectrometer SPHERES are in excellent agreement with simulations, which proves the dominance of geometric effe...
متن کاملCoherent backscattering of turbid samples containing large Mie spheres
We found that the coherent backscattering cone of turbid samples containing spherical Mie scatterers with a size parameter larger than about 20 strongly deviates from known analytical curve shapes. We compare experimental data with numerical simulations of Monte Carlo type. Moreover, we present a new wide-angle coherent backscattering set-up.
متن کاملNumerical simulation of light backscattering by spheres with off-center inclusion. Application to the lidar case.
A Mie backscattering model for spherical particles with off-center inclusion has been developed and tested. The program is capable of dealing with size parameter values up to approximately 1000, thus allowing one to simulate the optical behavior of a large variety of atmospheric aerosols, as well as cloud and precipitation particles. On the basis of this model, we simulated the optical properti...
متن کاملMagnetic-field effects on coherent backscattering of light in case of Mie spheres
– Magneto-optical Faraday rotation destroys the coherent backscattering enhancement of elastically multiple scattered light. In addition, Faraday rotation has been predicted, especially for Mie scattering, to cause a shift of the coherent backscattering cone off the exact backscattering direction in case of circular polarized light, or a twin peak in case of linear polarization (see Lenke R. an...
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ژورنال
عنوان ژورنال: Journal of large-scale research facilities JLSRF
سال: 2015
ISSN: 2364-091X
DOI: 10.17815/jlsrf-1-38