Relatively simple apparatus for lowering the temperature of a sample subjected to a very high pressure is presented. The pressure system is of the supported anvil type and can produce pressures in excess of 200 kilobars. Either a liquid nitrogen flow system or a liquid helium cryostat is used to cool the pressure cell. The pressure transmitting column is made of a special low conductive grade of fiberglass. Sample temperatures of 14 K at pressures up to 170 kilobars can be obtained.
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Williamson et al. (1972) studied this question.
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