Double-resonance spectroscopy of transitions between autoionizing levels of atomic oxygen
Journal Article
·
· Physical Review. A
- Argonne National Laboratory (ANL), Argonne, IL (United States)
Double-resonance spectroscopy is used to study transitions between autoionizing levels of atomic oxygen. The first laser is used to produce oxygen atoms in the 1s22s22p4 1D2 level by photodissociation of N2O and to excite two-photon transitions from the 1D2 level to the long-lived (2D°)3p 1F3 autoionizing level. The second laser is used to probe transitions from the 1F3 level to higher-energy autoionizing levels as well as to the O+ 2D° direct-ionization continuum. The transitions are detected by using a magnetic bottle electron spectrometer to monitor photoelectrons selectively with the kinetic energy specific to the process of interest. New transitions to the (2D°5/2,3/2)ns´ and nd´ Rydberg-series members with n=16--31 are observed. The intensity dependence of these results has also been studied, and the implications of this relatively low-power measurement for above-threshold ionization are discussed.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Research, Office of Health and Environmental Research
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5467574
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 9 Vol. 43; ISSN 1050-2947; ISSN PLRAAN
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
CHALCOGENIDES
COLLISIONS
DISSOCIATION
DOUBLE RESONANCE METHODS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
IONIZATION
LASER RADIATION
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTON COLLISIONS
PHOTON-MOLECULE COLLISIONS
RADIATIONS
RYDBERG STATES
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
CHALCOGENIDES
COLLISIONS
DISSOCIATION
DOUBLE RESONANCE METHODS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
IONIZATION
LASER RADIATION
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTON COLLISIONS
PHOTON-MOLECULE COLLISIONS
RADIATIONS
RYDBERG STATES