Radiative transitions between Rydberg states of molecules

Journal Article · Fri Jun 01 00:00:00 EDT 1984 · Sov. Phys. - JETP (Engl. Transl.); (United States)

OSTI ID:5886598

Balashov, E M; Golubkov, G V; Ivanov, G K

The multichannel quantum defect method is used in the quasiclassical approximation for the radial motion of the electron to calculate the oscillator strengths for transitions between the highly excited Rydberg states of diatomic molecules and transitions from Rydberg states to the continuum. It is shown that, because of the nonadiabatic coupling between electron and nuclear motion, the photoabsorption spectrum (position of peaks, their intensity, and shape) depends significantly on the initial state of the molecule. The effect of the electron-rotational and electron-vibrational interactions on the shape of the spectrum is analyzed. It is shown that, in the photoionization process, the evolution of the line profiles depends in an important way on interference between direct and resonance mechanisms. The result of this is that the final profile may differ appreciably from the Fano-Feshbach profile. Numerical calculations have been performed for the hydrogen molecule and a number of features in the photoionization and photoabsorption spectra of this molecule are predicted.

• Research Organization: Institute of Chemical Physics, Adademy of Sciences of the USSR, Moscow
• OSTI ID: 5886598
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Vol. 59:6
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HYDROGEN
ABSORPTION SPECTRA
OSCILLATOR STRENGTHS
PHOTOIONIZATION
ENERGY-LEVEL TRANSITIONS
MOLECULES
RYDBERG STATES
ELEMENTS
ENERGY LEVELS
EXCITED STATES
IONIZATION
NONMETALS
SPECTRA
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory