U.S.-France Cooperative Research: Synchrotron Radiation Compton Scattering Studies

该奖项将支持合作研究， 斯坦福大学同步加速器的亚瑟·比嫩斯托克教授 辐射实验室（SSRL）和Genevieve博士 卢皮亚斯和杰罗姆塔布 德国矿物学-晶体学大学 巴黎，在高强度X射线康普顿地区 散射 这项工作的目的是利用 同步加速器发出的高强度X射线 PEP储存环上束线的辐射 在SSRL进行非常高分辨率的电子 康普顿动量密度测量 散射 实现这一目标需要 设计和建造一个能量分散的 用于检测的最佳检测装置. 能量接近散射的X射线; 本仪器的校准， 以前研究的材料在更高的分辨率比 这在以前是可能的;最后，这项研究 复杂系统，如上述过渡金属 低于居里温度。 法国合作者有相当丰富的经验 用高分辨率的康普顿散射 确保SSRL的设施能够满足这些要求 在相对较短的时间内进行测量。 以下 探测器的安装，美国和法国 小组将学习不同的材料：美国组 将研究元素半导体和金属， 而法国小组将研究自然和 人工层状结构 两个小组将 共同分析所获得的结果，虽然 测量将在SSRL进行，一些数据分析 将在法国举行。 这项研究将进一步 康普顿散射技术本身， 为高分辨率散射提供了资源 科学界的测量。

This award will support collaborative research between Prof. Arthur Bienenstock of the Stanford Synchrotron Radiation Laboratory (SSRL), and Drs. Genevieve Loupias and Jerome Tarbes of the Laboratoire de Mineralogie-Crystallographie of the Universite de Paris, in the area of high-intensity X-ray Compton scattering. The objective of this work is to utilize the high-intensity X-rays emitted by synchrotron radiation from the beam lines on the PEP storage ring at SSRL to perform very high resolution electron momentum density measurements using Compton scattering. Achievement of this objective requires design and construction of an energy-dispersive detection apparatus optimized for detection at energies near that of the scattered X-rays; calibration of this apparatus by measurements on previously studied materials at higher resolution than has been previously possible; and, finally, the study of complex systems such as the transition metals above and below the Curie temperature. The French collaborators have considerable experience with high-resolution Compton scattering, which should assure that the SSRL facilities are equipped for these measurements in a relatively short time. Following the installation of the detectors, the U.S. and French groups will study different materials: the U.S. group will investigate elemental semiconductors and metals, while the French group will study both natural and artificial layered structures. The two groups will jointly analyze the results obtained, and although measurements will be made at SSRL, some data analysis will take place in France. The research will advance the technique of Compton scattering itself, and will provide a resource for high-resolution scattering measurements to the scientific community at large.