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A dynamically adjustable wavelength-sensitive neutron filter

Research output: Contribution to journalJournal article

Published

  • N. D. Vasilev
  • T. R. Charlton
  • O. Kirichek
  • C. J. Kinane
  • E. M. Schooneveld
  • S. Langridge
  • W. A. Kockelmann
  • P. V. E. McClintock
<mark>Journal publication date</mark>11/06/2012
<mark>Journal</mark>Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume677
Number of pages3
Pages1-3
<mark>Original language</mark>English

Abstract

The prototype of a wavelength-sensitive neutron filter has been realized and tested successfully for the first time. The filter exploits the neutron wavelength dependence of the transparency of He-3 gas. The analysis of test results gives high wavelength resolution Delta lambda/lambda similar or equal to 0.5% over the broad wavelength range 0.2-5.2 angstrom. We propose an idea to expand the filter range in the short wavelength direction by use of a cryogenic environment, and also consider the use of media using other than He-3 gas. The proposed filter might be used in advanced reflectometers and SANS2D neutron scattering instruments. (C) 2012 Elsevier B.V. All rights reserved.

Bibliographic note

NOTICE: this is the author’s version of a work that was accepted for publication in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 677, (2012) DOI#: 10.1016/j.nima.2012.01.064