ChemMat CARS - Status and Access
Access
Proposals are being accepted for all instruments at ChemMatCARS. There will be three proposal deadlines per year.
The next deadline for proposals to access ChemMatCARS is Friday, March 2 2007.
This deadline is for proposals seeking beamtime allocations in the May-August, 2007 operations cycle. The APS operating schedule can be viewed at http://www.aps.anl.gov/Facility/Schedule/index.html.
The scientific proposal must be made on the ASRP ChemMatCARS proposal form (download here). We have been experiencing difficulties with the ChemMatCARS web submission system:
Please do not upload proposals to the ChemMatCARS web site till further notice.
A support for funding form must be submitted if travel funding is required. This form can be downloaded here.
Please submit both forms to the ASRP office electronically, and in addition an original signed copy MUST be sent via your home institution research office by mail to:
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Mrs Margaret Edmondson |
Acknowledgement
Any publication resulting from ASRP funded trips to ChemMatCARS must be acknowledged using the following paragraph:
This work, including use of the ChemMatCARS sector, was supported by the Australian Synchrotron Research Program, which is funded by the Commonwealth of Australia under the Major National Research Facilities Program. Use of the Advanced Photon Source was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
One copy of each published manuscript should be sent to the ASRP administration office as soon as possible after the publication date. In addition, please ensure that the ASRP, and the use of Synchrotron Radiation, is acknowledged in any press release resulting from ASRP supported research.
The X-ray Beam:
Monochromatic beam is available via a combination of a high heat-load diamond <111> monochromator and a secondary Si (220) channel cut. To date only un-focussed beam is available, with the vertical focus mirror to be commissioned in the near future.
Crystallography:
A Bruker kappa diffractometer, incorporating a CCD detector, has been commissioned. A cryo-stream crystal cooler is available. Good data has been obtained from crystals with dimensions in the 10-20 m m range. The following table lists some representative crystals which have been measured:
| Compound | Type | Size(m m) | Reflections (@ 5 sec/frame) |
| Unknown | |||
| Asbolane (Ni?Co?MnO2) | Mineral | 2 x 5 x 10 | Excellent * |
| Woodrufite (Zn?Mn?O2) | Mineral | 5 x 5 x 100 | Saturating * |
| Sodium Tert-Butyl oxide | Organic | 20 x 20 x 100 | Excellent |
| Au2(2-Hmba)2(u-dppf) | Organic | 50 x 35 x 30 | Excellent |
| Au2(2-mbm)2(u-dppf) | Organic | 50 x 40 x 50 | Excellent |
| Known | |||
| Br2Te4Ni5O12 | High T. Inorg. | 3 x 5 x 55 | Saturating |
| Garnet | Mineral | 5 x 20 x 20 | Excellent |
| Ylid | Organic | 100um sphere | Saturating |
* no reflections visible for these samples on lab-based instruments
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SAXS:
The first SAXS patterns from rat tail collagen have been obtained, using a 100 m m pinhole, a sample to detector distance of 1.8 metres, and an image plate detector. An image was obtained in 120 seconds which is superior to an ANBF image collected in 6 minutes. Further optimisation should reduce the required time to under 10 seconds. While the minimum Q range achieved with the beam stop used in this trial was about 0.01 A-1 it is anticipate that using the full flight tube will allow a minimum Q of about 0.003 A-1.
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Surface Scattering/Diffraction
The liquid surface reflectometer is largely assembled in the experimental station. Further details can be found in the following newletters:
Document details: Original Web document. Author and contact Dr R Garrett
This page was last updated on 28 Aprilr, 2008