Development of a Facility for Ultrahigh Resolution Depth Profiling using Nuclear Resonances for Materials Research and Education

罗格斯大学将建立一个设施，利用窄核共振对薄膜中的轻元素进行极高分辨率（1 nm）深度剖析。 该设施将安装在罗格斯大学表面改性实验室（LSM）现有的加速器上，并将补充那里现有的几种深度分析技术。 这将是美国第一个此类设施。 实验将利用几种不同的极窄（10 eV）核共振。 通过扫描入射离子能量，可以改变核反应发生的表面的深度，并获得所研究的物种的深度分布的信息。 各种应用的例子将追求包括离子导体的扩散，分离和击穿的研究，钠在星际空间矿物中的扩散，高性能计算机芯片的新材料，以及用于储存核废料的材料的长期稳定性。 来自罗格斯大学和其他地方的LSM之外的用户也可以访问该设施，主要是通过合作。 该教育计划包括高中生在实验室的周末动手工作;本科生的基于计算机的实验和高级材料科学家的夏季研讨会。 使用离子束的研究吸引了广泛的学生，因为这些实验的技术复杂性，“简单”（经典的，独立于模型的）定量数据分析以及与非常真实的现代技术应用的紧密耦合。罗格斯大学将建造一个新的设施，利用窄核共振进行离子束分析，对轻元素进行深度剖析。 这将是美国第一个用于核共振深度分析的设施。 在许多科学应用中，人们需要将原子的数量量化为它们与表面的距离的函数。 提案中描述的这些不同应用的例子包括研究离子导体的扩散、分离和击穿，行星际空间矿物中钠的扩散，高性能计算机芯片的新材料，以及用于储存核废料的材料的长期稳定性。 该设施将利用几种不同的极窄核共振。 深度剖析将通过改变入射离子能量来完成，使得核反应发生的深度连续变化。 该教育计划包括高中生，本科生和高级材料科学家。 使用离子束的研究对广泛的学生具有吸引力。 这些实验的技术复杂性，“简单”（经典的，独立于模型的）定量数据分析和与非常真实的现代技术应用的密切结合，使其有可能吸引有前途的学生到科学。

Rutgers University will build a facility for very-high resolution (1 nm) depth profiling of light elements in thin films using narrow nuclear resonances. This facility will be installed at an existing accelerator at the Laboratory for Surface Modification (LSM) at Rutgers University and will complement several existing depth profiling techniques there. It will be the first facility of its kind in the US. The experiments will utilize several different extremely narrow (10 eV) nuclear resonances. By scanning the incident ion energy, the dept from the surface at which the nuclear reactions occur can be varied and information about the depth distribution of the species under study is obtained. Examples of the diverse applications to be pursued include studies of diffusion, segregation and breakdown in ionic conductors, diffusion of sodium in minerals in interplanetary space, novel materials for high performance computer chips, and the long term stability of materials used for storage of nuclear waste. Users outside the LSM, from Rutgers University and elsewhere, can also access this facility, primarily through collaborations. The educational program includes weekend hands-on work in the laboratory by high school students; computer based experiments by undergraduates and summer workshops for senior materials scientists. Research using ion beams is attractive to a wide range of students because of the technical sophistication of these experiments, the "straightforward" (classical, model independent) quantitative data analysis and the close coupling to very real modern technical applications.%%%Rutgers University will construct a novel facility for depth profiling of light elements by ion beam analysis using narrow nuclear resonances. This will be the first facility for nuclear resonance depth profiling in the US. In many scientific applications, one needs to quantify the number of atoms as a function of their distance from the surface. Examples of such diverse applications, described in the proposal, include studies of diffusion, segregation and breakdown in ionic conductors, diffusion of sodium in minerals in interplanetary space, novel materials for high performance computer chips, and the long term stability of materials used for storage of nuclear waste. The facility will utilize several different extremely narrow nuclear resonances. Depth profiling will be accomplished by changing the incident ion energy, so that the depth at which nuclear reactions occur is varied continuously. The educational program includes high school students, undergraduates and also senior materials scientists. Research using ion beams is attractive to a wide range of students. The technical sophistication of these experiments, the "straightforward" (classical, model independent) quantitative data analysis and the close coupling to very real modern technical applications makes it possible to attract promising students to science.