1992/08/01 by J. Gao, J. B. Delos · 103 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Alkali metal #Atomic and Molecular Physics #Atomic physics #Classical mechanics #Dipole #Electric field #Field (mathematics) #Magnetic dipole #Magnetic field #Matrix (chemical analysis) #Orbit (dynamics) #Physics #Quantum chaos and dynamical systems #Quantum electrodynamics #Quantum mechanics
paper · doi:10.1103/physreva.46.1455
published in Physical Review A 46(3), 1455-1467 (American Physical Society)
openalex publication_date 1992/08/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A formula for photoabsorption cross sections of hydrogen and alkali-metal atoms in a static electric field is derived, based on the closed-orbit theory previously used to study hydrogen in a magnetic field. Electric fields are simpler than magnetic fields, because the classical motion is regular and closed orbits can be enumerated. In alkali metals the core modifies the relevant dipole matrix elements, and it produces additional phase shifts.