Photoelectron spectroscopy of Rydberg states of atomic iodine

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.33.1718· OSTI ID:5935256

Pratt, S T

The photoelectron spectra obtained following two-photon resonant, three-photon ionization of atomic iodine via a number of Rydberg states are presented. Photoelectron spectra obtained via the (/sup 3/P/sub 2/)np(1)/sub 1/2/ levels and via the ( /sup 3/P/sub 0/)4f(3)/sub 5/2/ level demonstrate the production of state-selected I/sup +/ /sup 3/P/sub 2/ and /sup 3/P/sub 0/ ions, respectively, with approx.85% efficiency. Photoelectron spectra obtained via the (/sup 3/P/sub 2/)nf(3)/sub 5/2/ levels show the effect of a perturbation by the (/sup 3/P/sub 0/)4f(3)/sub 5/2/ level, as both I/sup +/ /sup 3/P/sub 2/ and /sup 3/P/sub 0/ are observed. The relative magnitudes of the /sup 3/P/sub 2/ and /sup 3/P/sub 0/ photoelectron peaks are shown to be strongly dependent on the relative magnitudes of the (/sup 3/P/sub 2/)nf(3)/sub 5/2/ and ( /sup 3/P/sub 0/)4f(3)/sub 5/2/ photoionization matrix elements. Two additional processes are observed in the photoelectron spectra. These correspond to fluorescence of the resonant intermediate level to lower-lying levels, followed by ionization of those levels, and to energy transfer from I( /sup 2/P/sub 1/2/ atoms to Rydberg atoms, resulting in ionization of the latter.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5935256
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 33:3; 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
DYE LASERS
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY LEVELS
ENERGY SPECTRA
EXCITED STATES
HALOGENS
IODINE
LASERS
LIQUID LASERS
MULTI-PHOTON PROCESSES
NONMETALS
PHOTOELECTRON SPECTROSCOPY
RESONANCE
RYDBERG STATES
SPECTRA
SPECTROSCOPY