Endstation
Last updated: August 2011
| Equipment or detector | Availability | Comments |
| Si(111) monochromator and 27 mm period undulator giving energy range 2- 20.7 keV (core range 5 -15 keV) | Available | |
| Mechanical KB mirrors with Si and Rh stripes. Mirrors can be moved from beam path for bulk EXAFS. | Available | Typically 1.5-3 micron spot size. Can be defocused up to 100 μm |
| 9 element Ge detector (4 – 20 keV) XANES can be achieved on sub ppm samples given enough time (6-8 hrs) | Available | |
| Sample stage (25 mm X movement, 30 mm Y movement, 4 kg load) now allows XRF map collection while rastering | Available | XRF maps using continuous scanning of the x-stage removes the deadtime associated with step scans allowing for larger and faster XRF maps. As an example the time required for a 200x200 point map is reduced by approx. 6hr in comparison to a step scan. |
| 4000 x 2500 pixel CCD for transmission diffraction | Available | Max angular range ca 45 degrees two-theta |
| 4 element Si Drifts detector (2 -10 keV) | Available | Primarily used below 5 keV |
| Triax Optical Spectrometer and MCP-PMT for XEOL | Available | Can be used with Hybrid mode for Time resolved measurements |
| Fluorescence Tomography | Available | Reconstruction algorithm development ongoing |
| ReflEXAFS | Available | 4 element Si detector mounted vertically. |
| Capillary infront of Fluorescence detector for 3d XAS/XRF | Available | A focussing optic on the detector is used to define a narrow sampling volume from the incident x-rays and outgoing fluorescence signal. This confocal arrangement enables slice, volume and depth dependant XRF/XANES studies of thick samples and solid particles. Spatial resolution ranges from 5-15microns depending on energy. |
Sample environments and stages
| Linkam TMS stage: 25 – 600 C | Available | Sample in gas environment |
| Linkam 1500 furnace 0 -1400 C | Available | Sample in gas environment |
| He enclosure for low energy | Available | At room temperature |
| In situ Raman | Available | 785 nm |
| Electron yield cell | Available | TEY or CEY operation |
| Oxford Instruments MicroRes | Available | Vacuum cryostat. The cooling systems have been upgraded. Sample cooling to 4K is now possible with excellent positional stability. |
| LN2 Cryostream for VT down to 100K | Available | About 3 mm of sample remains ice free for XRF/XAS. Advantage over Cryostat is no sample dimension constraints and faster sample changeover. |
| 2 Attocube 6-axis stages | Available | Provided for additional control of small components |
Support Labs
| Three labs: wet, dry and characterisation | Available | With basic equipment such as hot plate, balances, selection of glassware, pestle and mortar, tweezers, spatulas etc. |
| Thermo FT-IR Microscope | Available | FT-IR with mapping capabilites |
| Fischer XDAL-FD XRF | Available | 50keV - 100μm spot size |
| Perkin Elmer UV spectrometer | Available | |
| Renishaw Raman Microscope | Available | Micro-raman system with mapping capabilities. Red and blue lasers. |
| Zeiss AxioVision Optical Microscope | Available | |
| Nikon Polarised Microscope | Available | |
| Fume cupboard | Available | |
| Solvent tolerant dry, O2 free glove box | Available | |
| Incubator | Available | |
| Microbiological safety cabinet (class 2) | Available | |
| Grinding/Polishing machine | Available | Range of polishing grades available |
| Cutting machine | Available | Water cooled |
| Microtome | Available | WC and Stainless blades |
| Pellet Press | Available | 8 and 13mm dies |
| Tube Furnaces | Available on request | Advance notice required. |
| Upright Furnace in Air | Available | Up to 1500C |
| Clean Room | Available | Balance and Microscope installed |
| Fridge/ Freezer (-20 C) | Available | Access to a -80 freezer available on request |
| Low level Radionuclide Handling Lab With Glove Bag, mini centrifuge | Available | Please contact Fred Mosselmans for more info. |
Timing information: A typical EXAFS scan takes 25 minutes with a 3 micron or so sized beam.Mapping at higher energies (using Ge or Si detector) can now be done at around 5 points per second using rastering, 1 pt per second in step by step mode. Tests on rapid scanning with 50pts/second are planned for summer 2012.
Oxford Instruments MicroRes He/LN2 Cryostat
This low-vibration cryostat can be used either with liquid helium or liquid nitrogen. The clip-on stage can support thin samples of a diameter >14 mm (inner diameter of clip is ~10mm so a few extra mm are needed for support). The x-ray visible part of the sample is approx 10mm across; samples with a diameter larger then 20mm can be mounted but may not get to a uniform temperature throughout the sample. The sample chamber is in vacuum.