Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9845588 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 5 Pages |
Abstract
The aim of the investigation was to test the focusing properties of a new type of focusing neutron guide (trumpet) with parabolically shaped walls. The guide has a length of 431Â mm with an entrance area of 16Ã16Â mm2 and an output area of 4Ã4Â mm2. The interior surfaces were coated with a supermirror-surface m=3 and due to their parabolic shape it was expected that an incident parallel beam can be focused in the focal point of the parabolas. To prove this statement the neutron intensity distribution at different distances behind the guide was recorded by means of a standard, high-resolution radiography detector. The experiments were performed at the V12b instrument at HMI with different levels of beam monochromatization demonstrating maximum intensity gains of about 25. The consideration for using the focusing guide for the purposes of cold neutron radiography will be presented.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Nikolay Kardjilov, Peter Böni, André Hilger, Markus Strobl, Wolfgang Treimer,