http://worldcat.org/entity/work/id/39965328

High pressure physics

An apparatus for producing and measuring pressures to 20,000 atmospheres using a liquid or a gas environment has been constructed and tested. The pressure chamber has a working space of 1 inch in diameter and 4 inches long and is designed for use with internal heating to 1000C. A new type plug has been designed and tested allowing 8 electrical leads to be brought into pressure chamber. A torsional pendulum for measuring internal friction inside the pressure vessel has been constructed and instrumented. Damping measurements on about 0.06 inch diameter wire specimens can be made over a strain amplitude range of "epsilon" = 10(superscript -6) to 10 (superscript -4). Provision is made for an internal furnace heating the specimen over a wide temperature range. A creep apparatus has been constructed and tested. Preliminary results on tin have shown a definite slowing down of creep due to the application of pressure. An activation volume for the process is estimated.

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