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

罗格斯大学将建造一个设备，利用窄核磁共振对薄膜中的轻元素进行非常高分辨率(1 Nm)的深度剖析。该设备将安装在罗格斯大学表面修改实验室(LSM)现有的加速器上，并将补充那里现有的几项深度剖面技术。这将是美国第一个此类设施。这些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，可以改变发生核反应的表面的深度，并获得关于被研究物种的深度分布的信息。将进行的不同应用的例子包括研究离子导体的扩散、分离和击穿、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以外的用户也可以访问这一设施，主要是通过协作。教育项目包括高中生周末在实验室动手；本科生进行基于计算机的实验，以及为资深材料科学家举办的暑期研讨会。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，“直截了当”的(经典的，与模型无关的)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，通过使用窄的核共振的离子束分析来进行轻元素的深度剖析。这将是美国第一个进行核共振深度剖析的设施。在许多科学应用中，人们需要根据原子与表面的距离来量化原子的数量。提案中描述的这种不同应用的例子包括研究离子导体的扩散、分离和击穿、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，这样发生核反应的深度就会连续变化。该教育项目包括高中生、本科生和资深材料科学家。使用离子束的研究吸引了广泛的学生。这些实验的技术复杂性、“直截了当”的(经典的、与模型无关的)定量数据分析，以及与非常真实的现代技术应用的紧密结合，使得吸引有前途的学生进入科学成为可能。

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.