Diffraction data of helium and hydrogen atoms through polycrystalline graphene

Image data and radial traces calculated from image data recorded by a CMOS camera recording the phosphor screen of a MCP stack showing diffraction patterns of hydrogen and helium atoms diffracted through polycrystalline graphene. The kinetic energy of the projectile atoms was varied between 254 and 1581 eV. This energy was measured by measuring the energy of the ion beam prior to neutralization by applying a retarding potential to a Faraday Cup. Those measurements are also provided.本数据集包含CMOS相机（CMOS camera）采集的图像数据，以及基于该图像数据计算得到的径向轨迹；该CMOS相机用于记录微通道板组件（MCP stack）的荧光屏，所采集的图像展示了氢原子与氦原子经多晶石墨烯（polycrystalline graphene）衍射后的衍射图样。入射原子的动能范围为254至1581电子伏特（eV），该动能通过以下方式测得：在离子束发生中和前，对法拉第筒（Faraday Cup）施加减速电势以测量离子束的能量，相关测量数据亦包含于本数据集内。