Development of a 100 Kbar Piston-Cylinder Apparatus

该项目将建造和测试一个新的活塞- 高压系统将允许常规操作， 压力为60-100毫巴。设计简单， 设备小，需要一个600吨和一个200吨液压 标准半英寸直径活塞的柱塞。的增加 操作压力将通过使用烧结的 钻石结合分段腰带支持 核心 迫切需要直接的实验 熔融关系和其他相变的研究 在60-100帕的压力范围内的地幔。一些 多砧座新技术可以满足这一要求 高压系统，但这种仪器是非常 这是一个昂贵的项目，提供了一个有吸引力的选择。

This project will construct and test a new piston- high- pressure system which will allow routine operation at pressures of 60-100 kilobars. The design is simple and the apparatus small, requiring one 600 ton and one 200 ton hydraulic ram for a standard one-half inch diameter piston. The increase in operating pressure will be achieved by the use of a sintered diamond in conjunction with a segmented girdle support for the core. There is a critical need for direct experimental investigation of the melting relations and other phase changes in the Earth's mantle at pressures in the 60-100 kilobar range. Some of this need can be satisfied by the new technology of multi-anvil high pressure systems, but such instrumentation is extremely expensive and this project offers an attractive alternative.