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Gas encapsulation technology for large volume press |
Minghao Du(杜明浩) and Duanwei He(贺端威)† |
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China |
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Abstract For samples in the gaseous state at room temperature and ambient pressure, mature technology has been developed to encapsulate them in a diamond anvil cell (DAC). However, the large volume press (LVP) can only treat samples with starting materials in solid or liquid form. We have achieved stable encapsulation and reaction treatment of carbon dioxide in a centimeter sized sample chamber for a long time (over 10 min) under conditions of temperature higher than 1200 ℃ and pressure over 5 GPa through the use of integrated low-temperature freezing and rapid compression sealing method for LVP cell assemblies. This technology can also be applied to the packaging of other gaseous or liquid samples, such as ammonia, sulfur dioxide, water, etc. in LVP devices.
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Received: 13 May 2024
Revised: 31 July 2024
Accepted manuscript online: 14 September 2024
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PACS:
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07.35.+k
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(High-pressure apparatus; shock tubes; diamond anvil cells)
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82.40.Fp
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(Shock wave initiated reactions, high-pressure chemistry)
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Corresponding Authors:
Duanwei He
E-mail: duanweihe@scu.edu.cn
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Cite this article:
Minghao Du(杜明浩) and Duanwei He(贺端威) Gas encapsulation technology for large volume press 2024 Chin. Phys. B 33 110701
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