Acquisition of a Helium Liquefier System and Bulk Liquid Nitrogen Storage Container

学术研究基础设施计划的资金将用于购买氦液化系统、散装液氮储存容器和散装高压气态氦容器。这些收购将构成一个高效的氦回收低温设施的基础，为SUNYBuffalo的多学科科学和工程社区提供服务。除了两个研究中心，即电子和电光材料中心和纽约州超导研究所外，该设施还将为8个学术部门的教师和研究生提供服务。该设施应以更方便、更经济的方式向低温液体的使用者提供低温液体。物理系的主要用户涉及：准一维金属的超导电性；四氦薄膜表面的二维3He；强磁场下砷化镓量子阱中的D离子和许多电子对类氢施主的影响；基于II-VI磁性半导体的结构和量子井的研究；高临界温度超导体的输运和磁性；外延和块体半导体的高压研究。将为液氦用户开发一套高效的氦气回收液化系统，在降低液氦成本的同时，增加液氦使用的便利性。该设施将供来自八个系和两个中心的教职员工和学生使用。该设施将支持超导、半导体异质结构和量子井领域的研究。

The Academic Research Infrastructure Program funds will be used to acquire a helium liquifier system, a bulk liquid nitrogen storage con-tainer and bulk high pressure gaseous helium containers. These acquisitions will form the basis for a highly efficient, helium recycling, cryogenic facility serving a multidisciplinary scientific and engineering community at SUNYBuffalo. The facility will provide services to faculty and graduate students in 8 academic departments in addition to 2 research centers, namely the Center for Electronic and Electrooptic Materials and the New York State Institute for Superconductivity. The facility should provide cryogenic liquids in a more convenient and economical manner to the users of cryogenic liquids. The principal users from the Department of Physics are involved in research on: the superconductivity of quasi-1D-metals; two-dimensional 3Helium on the surface of 4Helium films; D- ions and many electron effects on hydrogenic donors in gallium arsenide quantum wells at high magnetic fields; the study of II-VI magnetic semiconductor based structures and quantum wells; transport and magnetic properties of high critical temperature superconductors; high pressure studies in epitaxial and bulk semiconductors. A helium liquifier system with efficient helium recycling will be developed for the users of liquid helium that will increase the convenience of liquid helium use in addition to reducing the cost of liquid helium. The facility will be used by faculty and students from eight departments and two Centers. The facility will support research in the the areas of superconductivity and semiconductor heterostructures and quantum wells.