US-France Cooperative Research: Elasticity of Cobalt and Molybdenum and High Pressures Development of Inelastic X-Ray Scattering at High-Pressure

在这个为期三年的美法合作研究奖中，加州大学圣克鲁斯分校的丹尼尔·法伯和巴黎第六大学的詹姆斯·巴德罗和纪尧姆·菲奎特将研究地球内核的弹性和地震各向异性。具体地说，他们将在法国格勒诺布尔的欧洲同步加速器研究设施(ESRF)进行实验，旨在利用非弹性x射线散射技术和x射线束记录钴和钼中弹性模量的压力依赖关系。拟议的实验方法将使研究人员能够对地球核心结构的性质设定定量界限，并得出绝对压力标度。该项目将促进对地球核心的组成以及核心和地幔的地震性质的了解。国家科学基金会(NSF)和国家科学研究中心(CNRS)共同支持这一项目。NSF将支付这名美国调查员访问法国的费用。CNRS为法国调查人员访问美国提供资金。该提案利用了法国在非弹性X射线散射方面的专业知识，并利用了位于法国格勒诺布尔的世界级设施ESRF。

0340846FarberIn this three-year U.S.-France cooperative research award, Daniel Farber of the University of California at Santa Cruz and James Badro and Guillaume Fiquet at the Universite Paris VI will investigate the elasticity and seismic anisotropy of the Earth's inner core. Specifically, they will conduct experiments aimed at documenting the pressure dependence of elastic moduli in cobalt and molybdenum using inelastic x-ray scattering techniques and the x-ray beam at the European Synchrotron Research Facility (ESRF) in Grenoble, France. The proposed experimental approach will allow the researchers to place quantitative bounds on the nature of the structure of Earth's inner core and to derive an absolute pressure scale. The project will advance understanding of the composition of the Earth's core and seismic properties of the core and mantle. The National Science Foundation (NSF) and the Centre National de la Recherche Scientifique (CNRS) jointly support this project. NSF will cover the costs of visits to France by the U.S. investigator. The CNRS provides funds to French investigators for their visits to the United States. The proposal takes advantage of French expertise in inelastic x-ray scattering and access to the ESRF, a world-class facility in Grenoble, France.