High Resolution Neutron Powder Diffractometer with a Solid Methane Moderator at Pulsed Spallation Neutron Source

1987 ◽  
Vol 26 (Part 1, No. 7) ◽  
pp. 1164-1169 ◽  
Author(s):  
Noboru Watanabe ◽  
Hajime Asano ◽  
Hirokatsu Iwasa ◽  
Setsuo Satoh ◽  
Hideaki Murata ◽  
...  
Keyword(s):  
High Resolution ◽  
Neutron Source ◽  
Spallation Neutron Source ◽  
Powder Diffractometer ◽  
Neutron Powder Diffractometer ◽  
Solid Methane

scholarly journals POWGEN: rebuild of a third-generation powder diffractometer at the Spallation Neutron Source

2019 ◽  
Vol 52 (5) ◽  
pp. 1189-1201 ◽  
Author(s):  
Ashfia Huq ◽  
Melanie Kirkham ◽  
Peter F. Peterson ◽  
Jason P. Hodges ◽  
Pamela S. Whitfield ◽  
...  
Keyword(s):  
Neutron Source ◽  
Structural Design ◽  
Third Generation ◽  
Spallation Neutron Source ◽  
Data Set ◽  
Large Unit ◽  
Powder Diffractometer ◽  
Unit Cells ◽  
Neutron Powder Diffractometer

The neutron powder diffractometer POWGEN at the Spallation Neutron Source has recently (2017–2018) undergone an upgrade which resulted in an increased detector complement along with a full overhaul of the structural design of the instrument. The current instrument has a solid angular coverage of 1.2 steradians and maintains the original third-generation concept, providing a single-histogram data set over a wide d-spacing range and high resolution to access large unit cells, detailed structural refinements and in situ/operando measurements.

Russian-French High Resolution Multi-Section Neutron Powder Diffractometer

2000 ◽  
Vol 321-324 ◽  
pp. 308-313 ◽  
Author(s):  
A.I. Kurbakov ◽  
V.A. Trounov ◽  
T.K. Baranova ◽  
A.P. Bulkin ◽  
R.P. Dmitriev ◽  
...  
Keyword(s):  
High Resolution ◽  
Powder Diffractometer ◽  
Neutron Powder Diffractometer

The New Neutron Powder Diffractometer with a Multi-Detector System for High-Efficiency and High-Resolution Measurements

1998 ◽  
Vol 37 (Part 1, No. 6A) ◽  
pp. 3319-3326 ◽  
Author(s):  
Kenji Ohoyama ◽  
Tomonori Kanouchi ◽  
Keiji Nemoto ◽  
Masayoshi Ohashi ◽  
Tsuyoshi Kajitani ◽  
...  
Keyword(s):  
High Resolution ◽  
High Efficiency ◽  
Detector System ◽  
Powder Diffractometer ◽  
Neutron Powder Diffractometer

scholarly journals The Australian High Resolution Neutron Powder Diffractometer

1983 ◽  
Vol 36 (4) ◽  
pp. 507 ◽  
Author(s):  
CJ Howard ◽  
CJ Ball ◽  
RL Davis ◽  
MM Elcombe
Keyword(s):  
High Resolution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Powder Diffractometer ◽  
Neutron Powder Diffractometer ◽  
Good Agreement

The high resolution neutron powder diffractometer installed on the AAEC HIFAR reactor at Lucas Heights is described. The resolution is in good agreement with predictions and, although below the most optimistic estimates, the intensities are usable. Examples are given of problems solved using the diffractometer which could not have been solved either by X-ray diffraction or by use of a conventional neutron powder diffractometer. Plans for diffractometer development are outlined.

The macromolecular neutron diffractometer (MaNDi) at the Spallation Neutron Source, Oak Ridge: enhanced optics design, high-resolution neutron detectors and simulated diffraction

2010 ◽  
Vol 43 (3) ◽  
pp. 570-577 ◽  
Author(s):  
L. Coates ◽  
A. D. Stoica ◽  
C. Hoffmann ◽  
J. Richards ◽  
R. Cooper
Keyword(s):  
High Resolution ◽  
Neutron Source ◽  
National Laboratory ◽  
High Energy ◽  
Neutron Guide ◽  
Spallation Neutron Source ◽  
Neutron Detectors ◽  
Spectral Window ◽  
Oak Ridge ◽  
Neutron Diffractometer

The macromolecular neutron diffractometer MaNDi is currently under construction at the first target station of the Spallation Neutron Source at Oak Ridge National Laboratory. This instrument will collect neutron diffraction data from small single crystals (0.1–1 mm3) with lattice constants between 100 and 300 Å, as well as data from less well ordered systems such as fibers. A focusing neutron guide has been designed to filter the high-energy neutron component of the spectrum and to provide a narrow beam with a wide spectral window and angular divergence almost insensitive to neutron wavelength. The system includes a final interchangeable section of neutron guide and two slits, which enable tuning of the horizontal and vertical beam divergence between 0.12 and 0.80° (full width at half-maximum) at the sample position. This allows the trading of intensity for resolution, depending on the scientific requirements. Efforts to enhance and develop suitable high-resolution neutron detectors at an affordable price are also discussed. Finally, the parameters of the neutron guide and detectors were used to simulate diffraction from a large unit cell.

Sign in / Sign up

Export Citation Format

Share Document