Acquisition of CCD X-ray Detection System

材料研究仪器项目支持的这项奖励将允许俄勒冈州立大学购买一种新的X射线探测系统，该系统将用于确定新的高科技材料以及与生物学和催化相关的小分子的原子级结构。该仪器包括一个面积探测器和温度控制装置，用于在77至1273K的温度范围内检查结构。这种变温测量提供了一种手段，用于建立原子级结构与整体物理性质之间的关系，如热膨胀、导电性和激光作用。通过引申，这种关系为新型微电子和光学设备的发明和开发建立了框架。温度控制对于确定小分子的结构也很重要，这些小分子可能在热上不稳定，或者在散射X射线束时只有微弱的效率。新系统在教育方面也有相当大的价值。与系列系统不同的是，由于可以从面积检测器获得衍射图的全景，研究生可以更容易地吸收衍射学和结晶学的概念，从而带来更富有成效的课堂和研究经验。该系统的高吞吐量还允许将教育体验扩展到参与许多材料研究合作项目的学生、俄亥俄州立大学和邻近机构的本科生，以及大学社区以外的其他人。总之，这些新的机会将为学生追求他们的职业目标提供坚实的基础。材料仪器研究项目的这一奖项支持俄勒冈州立大学购买新的X射线探测系统。该仪器将用于支持固态无机材料和小分子合成领域的研究和教育活动。该仪表组由带四圆测角仪的面阵CCD面阵探测器、低温和高温装置以及光纤准直器组成。这一专题组将提供一种手段，以扩大大学在结构确定领域的研究和教育任务，并使之更充分地结合起来。面积探测器使超晶胞和无公度结构的识别成为可能，数据收集时间短，吞吐量高，并大大改进了衍射学和结晶学概念的教学途径。将区域探测器的高吞吐量与低温和高温设备相结合，为变温测量提供了机会，这是目前无法获得的。无机材料的结构可以在低温和高温下确定，以建立晶体结构与热膨胀、电学或光学性质之间的关系，而弱衍射或热不稳定的小分子可以在低温下进行分析，以获得有用的结构信息。此外，当地本科教育机构和公司将通过合作项目获得这一仪器。

This award from the Instrumentation for Materials Research program support will allow Oregon State University to purchase a new X-ray detection system that will be utilized for the determination of atomic-level structures of new high-technology materials as well as small molecules of relevance in biology and catalysis. The instrumentation comprises an area detector and temperature-control devices for examining structures over the temperature range of 77 to 1273 K. Such variable-temperature measurements provide a means for establishing relationships between atomic-level structures and bulk physical properties, such as thermal expansion, electrical conductivity, and laser action. By extension, such relationships establish the framework for invention and development of new types of microelectronic and optical devices. Temperature control can also be important for establishing the structures of small molecules that might be thermally unstable or only weakly efficient in scattering an X-ray beam. The new system also has considerable value in education. Because an overall view of a diffraction pattern is available from the area detector, unlike in serial systems, graduate students can much more readily absorb the concepts of diffraction and crystallography, leading to more productive classroom and research experiences. The high throughput of the system also allows an extension of the education experience to students involved in a number of materials-research collaborative programs, to undergraduates both at OSU and neighboring institutions, and to others beyond the University community. Altogether, these new opportunities will provide students with robust foundations for pursuing their career objectives.This award from the Instrumentation for Materials Research program support Oregon State University with the purchase a new X-ray detection system. The instrumentation will be used to support research and education activities in the areas of solid-state inorganic materials and small-molecule synthesis. The proposed instrument cluster comprises a CCD area detector with four-circle goniometer, low-temperature and high-temperature devices, and a fiber-optic collimator. This cluster will provide a means to broaden and more fully integrate the research and education missions of the University in the area of structure determination. The area detector makes possible the ready identification of supercells and incommensurate structures, short data-collection times and high throughput, and much improved avenues for teaching concepts in diffraction and crystallography. Coupling the high throughput of the area detector with low- and high-temperature devices provides opportunities in variable-temperature measurements that are currently unavailable. Structures of inorganic materials can be determined at both low and high temperatures to establish relationships between crystal structure and thermal-expansion, electrical, or optical properties, while weakly diffracting or thermallyunstable small molecules can be analyzed at low temperatures to obtain useful structural information. Further, local undergraduate education institutions and companies will have access to this instrument through collaborative projects.