|
Home |
| Browse | |
|
|
Communities & Collections |
|
|
Issue Date |
|
|
Author |
|
|
Title |
|
|
Subject |
| Sign on to: | |
|
|
Receive email updates |
|
|
My APO authorized users |
|
|
Edit Profile |
|
|
|
|
|
About DSpace |
ANSTO Publications Online >
Journal Publications >
Journal Articles >
Please use this identifier to cite or link to this item:
http://apo.ansto.gov.au/dspace/handle/10238/3673
|
| Title: | The multipurpose time-of-flight neutron reflectometer "Platypus" at Australia's OPAL reactor |
| Authors: | James, M Nelson, A Holt, SA Saerbeck, T Hamilton, WA Klose, F |
| Keywords: | Cold neutrons Thin films Reflectivity Spectrometer Membranes OPAL Reactor |
| Issue Date: | 11-Mar-2011 |
| Publisher: | ELSEVIER SCIENCE BV |
| Citation: | James, M., Nelson, A., Holt, S.A., Saerbeck, T., Hamilton, W.A., Klose, F. (2011). The multipurpose time-of-flight neutron reflectometer "Platypus" at Australia's OPAL reactor. Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment, 632(1), 112-123 |
| Abstract: | In this manuscript we describe the major components of the Platypus time-of-flight neutron reflectometer at the 20 MW OPAL reactor in Sydney, Australia. Platypus is a multipurpose spectrometer for the characterisation of solid thin films, materials adsorbed at the solid-liquid interface and free-liquid surfaces. It also has the capacity to study magnetic thin films using spin-polarised neutrons. Platypus utilises a white neutron beam (lambda=2-20 angstrom) that is pulsed using boron-coated disc chopper pairs; thus providing the capacity to tailor the wavelength resolution of the pulses to suit the system under investigation. Supermirror optical components are used to focus, deflect or spin-polarise the broad bandwidth neutron beams, and typical incident spectra are presented for each configuration. A series of neutron reflectivity datasets are presented, indicating the quality and flexibility of this spectrometer. Minimum reflectivity values of <10(-7) are observed: while maximum thickness values of 325 nm have been measured for single-component films and 483 nm for a multilayer system. Off-specular measurements have also been made to investigate in-plane features as opposed to those normal to the sample surface. Finally, the first published studies conducted using the Platypus time-of-flight neutron reflectometer are presented. (C) 2011 Elsevier B.V. All rights reserved. |
| URI: | http://dx.doi.org/10.1016/j.nima.2010.12.075 http://apo.ansto.gov.au/dspace/handle/10238/3673 |
| ISSN: | 0168-9002 |
| Appears in Collections: | Journal Articles |
Files in This Item: There are no files associated with this item. |
Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.
|
DSpace Software Copyright © 2002-2010 Duraspace - Feedback |