RUI: Interatomic Potentials for Helium-Rare Gas Interactions (Physics)

氦弹和稀有气体靶原子碰撞中的小角散射数据将被分析，以准确地确定这些系统的基态势能作为核间分离的函数。结果将通过使用最小二乘法将现实势能模型(HFD)与已公布的kev-能量碰撞数据进行拟合来获得。这项研究的重点是能量大于0.1 eV的排斥势垒，相对于我们对较低能量下相互作用势的理解，目前对该区域的描述很差。这项工作将主要由本科生进行，并将在一个非常适合本科生参与的项目上为他们提供极好的培训，并将培训他们基于计算机的实验数据简化技术。

Data from small-angle scattering in collisions between helium projectiles and rare gas target atoms will be analyzed to yield accurate determinations of the ground state potential energy of these systems as a function of internuclear separation. Results will be obtained by fitting a realistic potential model (HFD) to published keV-energy collision data using a least squares minimization procedure. The focus of this study is the repulsive barrier at energies greater than 0.1 eV, a region which at present is poorly characterized relative to our understanding of the interaction potential at lower energies. The work will be carried out primarily by undergraduate students and will provide excellent training for them on a project that is well suited for undergraduate participation and will train them the techniques of computer based reduction of experimental data.