U.S.-France Cooperative Research: Nucleation Processes in Liquid and Solid Helium

9314295 Maris这个为期三年的奖项支持布朗大学的Humphrey J. Maris和巴黎高等师范学院的Sebastien Balibar在凝聚态物理方面的美法合作研究。他们的研究目的是研究液态和固态氦中广泛的成核现象。他们提出实验来研究氦气在负压下是如何形成气泡的，以及液体是如何从固相成核的。虽然美国和法国的机构拥有低温光学测量的基本设施，但每个机构都有专门的设备和专业知识。这位美国研究人员在研究液氦和过冷液氢方面为这个项目带来了相当多的专业知识。这与法国集团在固体氦方面的专业知识以及他们培养高质量固体氦晶体的能力相辅相成。这个项目将促进我们对氦的性质的了解。＊＊＊

9314295 Maris This three-year award supports U.S.-France cooperative research in condensed matter physics between Humphrey J. Maris, Brown University, and Sebastien Balibar of the Ecole Normale Superieure in Paris. The objective of their research is to investigate a broad range of nucleation phenomena in liquid and solid helium. They propose experiments to study how bubbles form in helium when the liquid is subject to a negative pressure, and how liquid nucleates from the solid phase. While the U.S. and French institutions have the basic facilities for optical measurements at low temperature, each one has specialized equipment and expertise. The U.S. investigator brings to this project considerable expertise in studies of liquid helium and supercooled liquid hydrogen. This is complemented by the French group's expertise in solid helium, and their ability to grow high quality solid helium crystals. The project will advance our understanding of the properties of helium. ***