Autocorrelation Function of Hydrogen Atoms in Magnetic Fields

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2006,（11）
• 页码范围: 2948-2951
• 页数: 4页
• 语种: 英文

摘要

The autocorrelation function is an important quantity that can reflect the dynamical properties of the Rydberg wave packet and can be measured in experiments. Applying time-dependent perturbation theory and rotating wave approximation, we derive the autocorrelation function of the double-pulse laser describing the evolution of a Rydberg wave packet of hydrogen atoms in magnetic fields. The resulting expression is written as a sum of the modified Gaussian terms. Each Gaussian term comes from a parent semiclassical closed orbit. It provides a direct explanation and experimentally controllable measurement scheme, which allows us therefore to recognize the closed orbit and to determine its returning time in high precision.