Design and performance of a novel neutron powder diffractometer: PEARL at TU Delft

2016 ◽  
Vol 49 (5) ◽  
pp. 1398-1401 ◽  
Author(s):  
L. van Eijck ◽  
L. D. Cussen ◽  
G. J. Sykora ◽  
E. M. Schooneveld ◽  
N. J. Rhodes ◽  
...  
Keyword(s):  
Powder Diffraction ◽  
High Performance ◽  
Research Reactor ◽  
Neutron Powder Diffraction ◽  
Powder Diffractometer ◽  
University Of Technology ◽  
Neutron Powder Diffractometer ◽  
And Performance

The performance of the new neutron powder diffraction instrument PEARL that is installed at the research reactor of Delft University of Technology is reported. It is based on the optimization concepts developed by Cussen [Nucl. Instrum. Methods Phys. Res. Sect. A (2007), 583, 394–406], which lead to high performance competing with existing constant-wavelength neutron powder diffractometers, despite the relatively low source brightness of the 2 MW reactor of Delft University of Technology.

ECHIDNA: a decade of high-resolution neutron powder diffraction at OPAL

2018 ◽  
Vol 51 (6) ◽  
pp. 1597-1604 ◽  
Author(s):  
Maxim Avdeev ◽  
James R. Hester
Keyword(s):  
High Resolution ◽  
Powder Diffraction ◽  
Research Reactor ◽  
Neutron Powder Diffraction ◽  
Quality Data ◽  
Current Status ◽  
Structural Studies ◽  
High Quality ◽  
High Quality Data ◽  
Neutron Powder Diffractometer

The ECHIDNA high-resolution neutron powder diffractometer at the 20 MW OPAL research reactor in Australia produces high-quality data for a broad spectrum of crystal and magnetic structural studies. The paper presents an overview of the current status of the hardware, latest developments in data-reduction software, statistics on instrument usage and the user programme, and instrument limitations.

Crystal structure of high-performance thermoelectric materials by high resolution neutron powder diffraction

2018 ◽  
Vol 551 ◽  
pp. 64-68 ◽  
Author(s):  
Peng Wu ◽  
Yoshihisa Ishikawa ◽  
Masato Hagihala ◽  
Sanghyun Lee ◽  
Kunling Peng ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Resolution ◽  
Powder Diffraction ◽  
Thermoelectric Materials ◽  
High Performance ◽  
Neutron Powder Diffraction

Neutron Powder Diffraction Applications at the University of Missouri Research Reactor

1985 ◽  
Vol 29 ◽  
pp. 153-162
Author(s):  
W. B. Yelon ◽  
F. K. Ross ◽  
R. Berliner
Keyword(s):  
Research Reactor ◽  
Rietveld Analysis ◽  
Neutron Powder Diffraction ◽  
Sensitive Detector ◽  
Statistical Accuracy ◽  
University Of Missouri ◽  
Position Sensitive ◽  
Neutron Powder Diffractometer ◽  
The University ◽  
Soller Slit

AbstractA neutron powder diffractometer at the University of Missouri Research Reactor (MURR) uses a linear position sensitive detector (PSD) which has increased both resolution and data acquisition rates. Rietveld analysis works as well with this system as with more conventional single and multi- Soller slit detector systems. This analysis has been successfully applied to problems involving more than 75 parameters and 1200 reflections and a future instrument upgrade should allow analyses which involve 100-150 parameters. A special advantage of the PSD instrument is that it needs only small (1-2 gm) samples to achieve high statistical accuracy.

PITSI: The neutron powder diffractometer for transition in structure investigations at the SAFARI-1 research reactor

2018 ◽  
Vol 551 ◽  
pp. 422-425 ◽  
Author(s):  
Andrew M. Venter ◽  
Phillipus R. van Heerden ◽  
Deon Marais ◽  
Johannes C. Raaths ◽  
Zeldah N. Sentsho
Keyword(s):  
Research Reactor ◽  
Powder Diffractometer ◽  
Neutron Powder Diffractometer ◽  
Structure Investigations

Applications of Neutron Powder Diffraction in Materials Research

1994 ◽  
Vol 38 ◽  
pp. 35-46 ◽  
Author(s):  
S. J. Kennedy
Keyword(s):  
Phase Transitions ◽  
Data Acquisition ◽  
Powder Diffraction ◽  
Research Reactor ◽  
Materials Science ◽  
Neutron Powder Diffraction ◽  
X Ray ◽  
Materials Research ◽  
Rapid Data Acquisition

Abstract The aim of this article is to provide an overview of the applications of neutron powder diffraction in materials science. The technique is described with particular attention to comparison with the X-ray powder diffraction technique to which it is complementary. In this context, emphasis is placed on rapid data acquisition and in-situ studies of phase transitions. Examples of some applications of the technique to materials science problems, at the HIFAR research reactor, Lucas Heights are included.

Using neutron powder diffraction and first-principles calculations to understand the working mechanisms of porous coordination polymer sorbents

2015 ◽  
Vol 71 (6) ◽  
pp. 648-660 ◽  
Author(s):  
Hubert Chevreau ◽  
Samuel G. Duyker ◽  
Vanessa K. Peterson
Keyword(s):  
Powder Diffraction ◽  
First Principles ◽  
Density Functional ◽  
Deep Understanding ◽  
Neutron Powder Diffraction ◽  
Sorption Properties ◽  
Solid Sorbents ◽  
Polymer Sorbents ◽  
And Performance ◽  
Working Mechanisms

Metal–organic frameworks (MOFs) are promising solid sorbents, showing gas selectivity and uptake capacities relevant to many important applications, notably in the energy sector. To improve and tailor the sorption properties of these materials for such applications, it is necessary to gain an understanding of their working mechanisms at the atomic and molecular scale. Specifically, it is important to understand how features such as framework porosity, topology, chemical functionality and flexibility underpin sorbent behaviour and performance. Such information is obtained through interrogation of structure–function relationships, with neutron powder diffraction (NPD) being a particularly powerful characterization tool. The combination of NPD with first-principles density functional theory (DFT) calculations enables a deep understanding of the sorption mechanisms, and the resulting insights can direct the future development of MOF sorbents. In this paper, experimental approaches and investigations of two example MOFs are summarized, which demonstrate the type of information and the understanding into their functional mechanisms that can be gained. Such information is critical to the strategic design of new materials with targeted gas-sorption properties.

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