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Diamond anvil cell
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===Components=== * High-pressure vessel: Vessel in which the diamond anvil cell is loaded. * Clamp device seals the DAC; which is tightened by closure mechanism with motor driven screws. * [[Programmable logic controller|PLC]] (programmable logic controller): Controls air flow to the compressor and all valves. The PLC ensures that valves are opened and closed in the correct sequence for accurate loading and safety. * Compressor: Responsible for compression of the gas. The compressor employs a dual-stage air-driven diaphragm design that creates pressure and avoids contamination. Able to achieve 207 MPa of pressure. * Valves: Valves open and close via the PLC to regulate which gases enter the high-pressure vessel. * Burst disks: Two burst disks in the system β one for the high-pressure system and one for the low-pressure system. These disks act as a pressure relief system that protects the system from over-pressurization * Pressure transducers: A pressure sensor for the low- and high-pressure systems. Produces a 0β5 V output over their pressure range. * Pressure meters: Digital displays connected to each pressure transducer and the PLC system. * Vacuum pump and gauges: Cleans the system (by evacuation) before loading. * Optical system: Used visual observation; allowing in situ observations of gasket deformation. * Ruby fluorescence system: Pressure in the sample chamber can be measured during loading using an online ruby fluorescence system. Not all systems have an online ruby fluorescence system for in situ measuring. However, being able to monitor the pressure within the chamber while the DAC is being sealed is advantageous β ensuring the desired pressure is reached (or not over-shot). Pressure is measured by the shift in the laser induced luminescence of rubies in the sample chamber.
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