Diamond Anvil Cells
Diamond Anvil cells (DACs) are a relatively simple way of generating high pressure on a single crystal.
In collaboration with Stephen Moggach at UWA, we developed a way to use mini-DACs on MX1. These DACs can be mounted on the goniometer like a normal sample, and can generate pressures up to 5 GPa.
 Design of a mini-DAC | DAC scheme showing location of crystal |
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How to run high-pressure experiments:
During the current development phase, this work needs to be done in collaboration with the beamline staff and Stephen. If you have CAP beamtime scheduled on MX1, you can use this to run high pressure experiments. But you will need to do it during staff working hours and will need to allow most of the day to learn the protocol and collect data. You can also apply for rapid access time for high pressure experiments.
Further info: https://www.ansto.gov.au/facilities/australian-synchrotron/melbourne-access-proposals
Crystal requirements are:
Well diffracting. They should be of sufficient quality to get good data on MX1.
Up to 200 um. Any larger and they won’t fit in the DAC.
Stable at room temperature and in air. The mounting of crystals in the DAC is quite tedious, so you won’t want to be doing it with crystals that are delicate.
Well understood. You will need a good dataset of them at room temperature and ambient pressure. This will help you when solving and refining high pressure data.
Workflow:
Instruction pages:
DACs: Sample mounting, centering and collection