کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1682231 | 1518730 | 2012 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The Nanoscale Ordered MAterials Diffractometer NOMAD at the Spallation Neutron Source SNS
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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![عکس صفحه اول مقاله: The Nanoscale Ordered MAterials Diffractometer NOMAD at the Spallation Neutron Source SNS The Nanoscale Ordered MAterials Diffractometer NOMAD at the Spallation Neutron Source SNS](/preview/png/1682231.png)
چکیده انگلیسی
The Nanoscale Ordered MAterials Diffractometer (NOMAD) is neutron time-of-flight diffractometer designed to determine pair distribution functions of a wide range of materials ranging from short range ordered liquids to long range ordered crystals. Due to a large neutron flux provided by the Spallation Neutron Source SNS and a large detector coverage neutron count-rates exceed comparable instruments by one to two orders of magnitude. This is achieved while maintaining a relatively high momentum transfer resolution of a δQ/Qâ¼0.8% FWHM (typical), and a possible δQ/Qof0.24% FWHM (best). The real space resolution is related to the maximum momentum transfer; a maximum momentum transfer of 50 Ã
â1 can be obtained routinely and the maximum momentum transfer given by the detector configuration and the incident neutron spectrum is 125Â Ã
-1. High stability of the source and the detector allow small contrast isotope experiments to be performed. A detailed description of the instrument is given and the results of experiments with standard samples are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 287, 15 September 2012, Pages 68-75
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 287, 15 September 2012, Pages 68-75
نویسندگان
Jörg Neuefeind, Mikhail Feygenson, John Carruth, Ron Hoffmann, Kenneth K. Chipley,