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Updated: Jul 3, 2026
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
Published on: October 7, 2013
Cryogenic gas loading in a Mao-Bell-type diamond anvil cell for high pressure-high temperature investigations
M Sekar1, N R Sanjay Kumar, P Ch Sahu
1Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India. sekarm@igcar.gov.in
Abstract:
A simple system for loading argon fluid at cryogenic temperatures in a Mao-Bell-type diamond anvil cell (DAC) has been developed. It is done in a two step process in which the piston-cylinder assembly alone is submerged in the cryogenic chamber for trapping the liquefied inert gas. Liquid nitrogen is used for condensing the argon gas. This system is now being efficiently used for loading liquid argon in the DAC for high pressure-high temperature experiments. The success rate of trapping liquefied argon in the sample chamber is about 75%. The performance of the gas loading system is successfully tested by carrying out direct conversion of pyrolitic graphite to diamond under high pressure-high temperature using laser heated DAC facility.
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