Eigenchannel quantum-defect theory of open-shell atoms. I. Autoionization resonances and eigenphase shifts of chlorine

Journal Article · Fri Mar 01 04:00:00 EST 1985 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.31.1515· OSTI ID:5992097

Wang, Z; Lu, K T

A multichannel quantum-defect theory focused on the time-delay matrix is applied to the analysis of Rydberg levels and autoionization resonances of the chlorine atom. The analysis shows that recently observed photoionization cross sections above the 3p/sup 4/( /sup 3/P) threshold of the chlorine ion may be interpreted in terms of unresolved groups of resonances with three different total angular momenta J and approximately the same energy. Experimental data of Rydberg levels were used to determine the phase shift of the collisional eigenstate (quantum defect) and the time-delay matrix for the electron-ion scattering process. The LS coupling scheme is assumed for the electron + ion compound state. The channel interaction strengths and dipole matrix elements of even-parity states relevant to electron-ion collisional and recombination processes are obtained. The branching ratio of photoelectrons is calculated.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 5992097
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 31:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
AUTOIONIZATION
CHLORINE
COLLISIONS
CROSS SECTIONS
EIGENSTATES
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FUNCTIONS
HALOGENS
ION COLLISIONS
IONIZATION
NONMETALS
PHASE SHIFT
PHOTOIONIZATION
RECOMBINATION
RESONANCE
RYDBERG STATES
WAVE FUNCTIONS