Atomic Physics with Lasers

激光原子物理

• 批准号: 42146-2012
• 负责人: vanWijngaarden, William
• 金额: $ 1.82万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=521629
• 关键词: Atomic; Physics; Lasers

. The objective of this General Physics proposal is to study the electronic structure of atoms. Innovative spectroscopic techniques will be developed to measure atomic properties such as the fine/hyperfine structure intervals of Li+ to unprecedented accuracy; by one and two orders of magnitude, respectively. This will provide the world's most stringent test of our understanding of a three body system. Quantum Electrodynamic (QED) theory will be checked and nuclear sizes at a resolution of 10^-18 meter will be investigated. This "Microscope" has 100 times higher resolution than is achieved scattering electrons off nuclei. QED effects such as the Lamb shift are proportional to lowest order to the fourth power of the nuclear charge. Hence, these effects are 2 orders of magnitude larger in lithium than in hydrogen. In addition, recent theoretical advances enable the computation of state wavefunctions of few electron atoms to unprecedented accuracy.

。这项普通物理提案的目的是研究原子的电子结构。创新的光谱技术将被开发出来，以测量原子的性质，如Li+的精细/超精细结构间隔，达到前所未有的精度；分别达到一个和两个数量级。这将为我们对三体系统的理解提供世界上最严格的考验。将检验量子电动力学(QED)理论，并研究分辨率为10^-18米的原子核大小。这种“显微镜”的分辨率比将电子从原子核上散射出来的分辨率高100倍。像兰姆位移这样的QED效应与核电荷的最低四次方成正比。因此，这些效应在锂中比在氢中大两个数量级。此外，最近的理论进展使少数电子原子态波函数的计算达到了前所未有的精度。