18 January 1989 Calculations And Measurement Of The Performance Of Converging Neutron Guides
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Abstract
If properly designed, converging guides may be used to increase the current density of neutrons in a beam from a parallel neutron guide. The disadvantage of this type of device is that there is an increase in beam divergence. The spatial and angular distributions of the beam emerging from a converging guide are generally nonuniform, and the performance of the guide is dependent on the neutron's wavelength. Analytic and numerical methods of calculation are briefly discussed, and the results of selected Monte Carlo numerical calculations are presented. Measurements on a scaled down version of a converging guide system are reported and found to compare well with calculation.
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J. R. D. Copley, J. R. D. Copley, C. F. Majkrzak, C. F. Majkrzak, } "Calculations And Measurement Of The Performance Of Converging Neutron Guides", Proc. SPIE 0983, Thin Film Neutron Optical Devices: Mirrors, Supermirrors, Multilayer Monochromators, Polarizers, and Beam Guides, (18 January 1989); doi: 10.1117/12.948751; https://doi.org/10.1117/12.948751
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