The Manuel Lujan Jr. Neutron Scattering Center (Lansce)

Goldstone, J. A.; Lujan, Manuel

doi:10.1557/proc-376-13

Cited by 2 publications

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“…Furthermore, we note that the NERA spectrometer at JINR generally requires hydrogenated samples under study to have a mass of approx. 1 g or more, while the Filter Difference Spectrometer (FDS) at LANSCE required the sample mass to be larger than 0.5 g…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Detection Limits and Instrument Sensitivity of High-Resolution Broadband Neutron Spectrometers

et al. 2022

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The limits of detection (LOD) and quantitation (LOQ) in the mass domain, for broadband vibrational spectroscopy with neutrons on the TOSCA spectrometer at the ISIS Pulsed Neutron and Muon Source (UK), have been studied. The well-known 3σ and 10σ approaches are used through a specifically developed analytical procedure that is based on the calculation of the integrated spectral intensities in selected energy-transfer ranges, as a function of mass of standard reference materials and calibrants, such as ZrH 2 , 2,5diiodothiophene, and low-density polyethylene. The analysis shows that the blank, that is, the instrument setup without the analyte, plays a critical role in the measurement performance, especially for small specimen quantities. The results point that TOSCA enables detection of 128 μmol (LOD H ) and quantitation of 428 μmol (LOQ H ) of elemental hydrogen analytes in ZrH 2 . The determined values for this and other standards allow for the assessment of the calibration curve design and instrument sensitivity and define a method to be used for inelastic neutron scattering spectrometers such as TOSCA, or VESPA, the new beamline under construction at the European Spallation Source in Lund (Sweden).

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Section: Resultsmentioning

confidence: 99%

Hydrogen Detection Limits and Instrument Sensitivity of High-Resolution Broadband Neutron Spectrometers

et al. 2022

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“…At the sample position, the beam cross section is 5 mm high x 25 mm wide, and the flux for neutrons, whose wavelengths range between 16 and 32 A, is 2 x lo5 n/cm2s. Reflectivities down to can be measured (Goldstone 1995). Over the whole wavelength range from 1 to 32 A, the momentum transfer varies from 0.007 to 0.3 A-l.…”

Section: A Grazing-angle Neutron Reflectometersmentioning

confidence: 99%

Use of ultracold neutrons for condensed-matter studies

Michaudon¹

1997

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This report was prepared as an account of work sponsored by an agency ofthe United States Government. Neither The Regents of the University of Cal@rnia, the United States Government nor any agency thereof, nor any of tkeir employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately moned rigkts. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessady constitute or imply its endorsement, recommendation, or favoring by The Regents of the University of California, the United States Government, or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of The Regents of the University of California, the United States Government, or any agency there$ Los Alamos National Laborato y strongly supports academicfreedom and a researcher's right to publish; as an institution, however, the Laboratory does not endorse the viewpoint of a publication or guarantee its technical correctness.

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The Manuel Lujan Jr. Neutron Scattering Center (Lansce)

Cited by 2 publications

References 0 publications

Hydrogen Detection Limits and Instrument Sensitivity of High-Resolution Broadband Neutron Spectrometers

Hydrogen Detection Limits and Instrument Sensitivity of High-Resolution Broadband Neutron Spectrometers

Use of ultracold neutrons for condensed-matter studies

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