Breakthrough in neutron backscattering spectroscopy: Energy resolution improved by one order of magnitude using the GaAs 200 reflection

Journal article


Publication Details

Author(s): Kuhlmann K, Appel M, Frick B, Magerl A
Journal: Review of Scientific Instruments
Publisher: AMER INST PHYSICS
Publication year: 2019
Volume: 90
Journal issue: 1
ISSN: 0034-6748
eISSN: 1089-7623


Abstract

We have developed and tested a demonstrator for a neutron backscattering spectrometer with a tenfold enhanced energy resolution. This is made possible by taking advantage of the narrow intrinsic linewidth of the GaAs 200 Bragg reflection, which is one order of magnitude smaller than the linewidth of the currently used Si 111. First measurements yielded an unprecedented energy resolution of 78 neV FWHM, a factor of 10 narrower than the standard Si 111 configuration and about a factor of 4 smaller than the highest energy resolution currently available with Si 111. These measurements provide proof of concept for the construction of a full-scale user instrument. Published under license by AIP Publishing.


FAU Authors / FAU Editors

Appel, Markus Dr.
Lehrstuhl für Biophysik
Kuhlmann, Kristijan
Lehrstuhl für Biophysik
Magerl, Andreas Prof. Dr.
Lehrstuhl für Biophysik


External institutions with authors

Institute Laue-Langevin (ILL)


How to cite

APA:
Kuhlmann, K., Appel, M., Frick, B., & Magerl, A. (2019). Breakthrough in neutron backscattering spectroscopy: Energy resolution improved by one order of magnitude using the GaAs 200 reflection. Review of Scientific Instruments, 90(1). https://dx.doi.org/10.1063/1.5046476

MLA:
Kuhlmann, Kristijan, et al. "Breakthrough in neutron backscattering spectroscopy: Energy resolution improved by one order of magnitude using the GaAs 200 reflection." Review of Scientific Instruments 90.1 (2019).

BibTeX: 

Last updated on 2019-22-02 at 19:08