Production of a continuously tunable neutron beam free of higher-order contamination
| Autor: | P.Y. Wong, Z. Tun, D.C. Tennant, J.H. Fox |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Physics
Nuclear and High Energy Physics Neutron-velocity selector business.industry Physics::Optics Bragg's law chemistry.chemical_element Neutron radiation Neutron temperature law.invention Optics chemistry law Neutron Neutron reflectometry Beryllium Nuclear Experiment business Instrumentation Monochromator |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 399:391-395 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/s0168-9002(97)00962-5 |
| Popis: | A neutron velocity selector specifically designed as a higher-order neutron filter has been developed and tested. For wavelengths longer than 2.37 A the device transmits more than 80% of the fundamental wavelength (λ) neutrons, while the rejection ratio for higher-order wavelengths ( λ n ) is greater than 10 4 . Together with a Cu 2 MnAl single-crystal monochromator, a continuously tunable polarized neutron beam that is free from higher-order neutrons can be produced for wavelengths between 2.37 and 4 A, bridging the gap between a pyrolitic graphite filter and a Beryllium filter. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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