Acquisition of a Hellium-Three Dilution Refrigerator (Materials Research)

基本设备经费用于稀释冰箱和配件。该设备将用于研究由液氦或固体氢表面支撑的二维流体和固体性质的实验。该系统由简单的粒子组成，具有很好的相互作用，并由光滑的衬底支撑，是一个易于进行理论分析的系统，是二维系统的理想原型。理论表明，从这个系统中收集的信息对于理解相变和其他难以研究的二维系统的性质是有价值的。对这一系统的研究也将检验新的理论技术和最近的预测。首席研究员在这一领域经验丰富，备受尊敬。这台设备将大大加强低温物理计划所支持的研究。

Capital equipment funds are provided for a dilution refrigerator and accessories. This equipment will be used on experiments which investigate the properties of two-dimensional fluids and solids supported by a liquid helium or solid hydrogen surface. This system, made up of simple particles with well understood interactions and supported by a smooth substrate, is a system easily subjected to theoretical analysis and is an ideal prototype of two-dimensional systems. Theory suggests that information gleaned from this system should be valuable in the understanding of phase transitions and other properties of two dimensional systems which are more difficult to investigate. A study of this system will also test new theoretical techniques and recent predictions. The principal investigator is experienced and well-regarded in this field. This equipment will enhance considerably the research supported by the Low Temperature Physics Program.