scholarly journals Proof-of-concept of a neutron time-of-flight ellipsoidal detector

2021 ◽  
Vol 92 (4) ◽  
pp. 043555
Author(s):  
J. Jeet ◽  
M. Eckart ◽  
J. Gjemso ◽  
K. Hahn ◽  
E. P. Hartouni ◽  
...  
Keyword(s):  
Time Of Flight ◽  
Proof Of Concept ◽  
Neutron Time

scholarly journals A Rietveld refinement method for angular- and wavelength-dispersive neutron time-of-flight powder diffraction data

2015 ◽  
Vol 48 (6) ◽  
pp. 1627-1636 ◽  
Author(s):  
Philipp Jacobs ◽  
Andreas Houben ◽  
Werner Schweika ◽  
Andrei L. Tchougréeff ◽  
Richard Dronskowski
Keyword(s):  
Diffraction Pattern ◽  
Powder Diffraction ◽  
Diffraction Data ◽  
Time Of Flight ◽  
The Novel ◽  
Proof Of Concept ◽  
Powder Diffraction Data ◽  
Novel Approach ◽  
Refinement Method ◽  
Neutron Time

This paper introduces a two-dimensional extension of the well established Rietveld refinement method for modeling neutron time-of-flight powder diffraction data. The novel approach takes into account the variation of two parameters, diffraction angle 2θ and wavelength λ, to optimally adapt to the varying resolution function in diffraction experiments. By doing so, the refinement against angular- and wavelength-dispersive data gets rid of common data-reduction steps and also avoids the loss of high-resolution information typically introduced by integration. In a case study using a numerically simulated diffraction pattern of Rh0.81Fe3.19N taking into account the layout of the future POWTEX instrument, the profile function as parameterized in 2θ and λ is extracted. As a proof-of-concept, the resulting instrument parameterization is then utilized to perform a typical refinement of the angular- and wavelength-dispersive diffraction pattern of CuNCN, yielding excellent residuals within feasible computational efforts. Another proof-of-concept is carried out by applying the same approach to a real neutron diffraction data set of CuNCN obtained from the POWGEN instrument at the Spallation Neutron Source in Oak Ridge. The paper highlights the general importance of the novel approach for data analysis at neutron time-of-flight diffractometers and its possible inclusion within existing Rietveld software packages.

Dispersed clusters in (Fe,Cr)3Al alloys: Neutron time-of-flight diffraction study

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Anatoly M. Balagurov ◽  
Ivan A. Bobrikov ◽  
Sergey V. Sumnikov ◽  
Igor S. Golovin
Keyword(s):  
Diffraction Study ◽  
Time Of Flight ◽  
Time Of Flight Diffraction ◽  
Neutron Time

Structure of in the range K from neutron time-of-flight total scattering

2008 ◽  
Vol 69 (9) ◽  
pp. 2146-2150 ◽  
Author(s):  
E.S. Božin ◽  
A. Sartbaeva ◽  
H. Zheng ◽  
S.A. Wells ◽  
J.F. Mitchell ◽  
...  
Keyword(s):  
Time Of Flight ◽  
Total Scattering ◽  
Neutron Time

scholarly journals Calibration and operation of a neutron time-of-flight scintillator array on Nova

1997 ◽  
Vol 34-35 ◽  
pp. 577-580 ◽  
Author(s):  
Robert E Chrien ◽  
Kenneth A Klare ◽  
Thomas J Murphy ◽  
Lauren A Rauber
Keyword(s):  
Time Of Flight ◽  
Neutron Time ◽  
Scintillator Array

Zero degree neutron time-of-flight facility at RCNP

1986 ◽  
Vol 244 (3) ◽  
pp. 449-454 ◽  
Author(s):  
Hideyuki Sakai ◽  
Nobuyuki Matsuoka ◽  
Tetsuo Noro ◽  
Takane Saito ◽  
Atsushi Sakaguchi
Keyword(s):  
Time Of Flight ◽  
Neutron Time ◽  
Zero Degree
Sign in / Sign up

Export Citation Format

Share Document