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  4. The use of selected neutron absorption resonance filters to suppress spurious events on hot neutron spectrometers
 
research article

The use of selected neutron absorption resonance filters to suppress spurious events on hot neutron spectrometers

Lançon, Diane Virginie Marie  
•
Ewings, R. A.
•
Stewart, J. R.
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2015
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Resonant absorption can be used as a filter for high energy neutron spectroscopy. Here we report the transmission of eight thin foil filters: erbium, indium, iridium, dysprosium, hafnium, gadolinium, cadmium and samarium, measured using neutron time-of-flight techniques over a range of energies (1 meV to 10 eV). Measured transmission is converted into energy-dependent absorption cross-section which compares closely to tabulated values. Each resonance is characterized from 91 meV (samarium) to 2815 meV (gadolinium) by Lorentzian fits. Possibilities for the use of neutron filters depending on the type of spurious background are discussed and the performance is simulated for a specific example of a hot neutron triple axis spectrometer experiment. (C) 2015 Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.nima.2014.12.114
Web of Science ID

WOS:000349987100002

Author(s)
Lançon, Diane Virginie Marie  
Ewings, R. A.
Stewart, J. R.
Jimenez-Ruiz, M.
Rønnow, Henrik M.  
Date Issued

2015

Publisher

Elsevier

Published in
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume

780

Start page

9

End page

14

Subjects

Neutron resonance filter

•

Neutron absorption cross-section

•

Hot neutron spectroscopy

URL

URL

http://lqm.epfl.ch/
Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LQM  
Available on Infoscience
April 13, 2015
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/113144
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