U.S.-Brazil Cooperative Research: Cooperative Studies of Anomalous X-Ray Scattering

该奖项将支持教授之间的合作 匹兹堡大学的理查德·普拉特和教授们 联邦大学的Solange de Barros和Odair Goncalves 与里约热内卢大学的一个物理小组合作， 位于巴西库里蒂巴的巴拉那联邦大学。 的目的 本研究主要是进行实验和理论研究 伽马射线弹性散射的研究， 来自原子的X射线，基于在 三所以上的大学。 主要重点将放在异常散射（弹性 能量接近原子吸收的光子散射 边缘）。 理解光子散射过程 重要的是改善技术基础和基本的 了解原子和固体物理学。 的 该项目将试图确定一个合适的选择， 理论与实验的比较。 研究人员 将研究不同原子势的影响， 实验信息来理解确定性的极限 在原子边缘附近的预测。 他们的实验工作 将检验这些预测的有效性。 理论 研究将在匹兹堡大学进行。 实验工作将在里约联邦大学进行 里约热内卢和巴拉那联邦大学。

This award will support collaboration between Professor Richard Pratt of the University of Pittsburgh and Professors Solange de Barros and Odair Goncalves of the Federal University of Rio de Janeiro, in cooperation with a physics group at the Federal University of Parana in Curitiba, Brazil. The aim of the research is to conduct experimental and theoretical investigations into the elastic scattering of gamma rays and X-rays from atoms, based on complementary programs at the three above universities. The main focus will be on anomalous scattering (elastic scattering of photons with energies near atomic absorption edges). Understanding the photon scattering process is important in improving the technology base and the basic understanding of atomic and solid-state physics. The project will attempt to identify suitable choices for a critical comparison of theory and experiment. The researchers will study the effects of different atomic potentials and use experimental information to understand the limits of certainty in predictions near atomic edges. Their experimental work will test the validity of these predictions. The theoretical research will be conducted at the University of Pittsburgh. The experimental work will be performed at the Federal University of Rio de Janeiro and the Federal University of Parana.