Lifetime measurements of core-excited quartet levels in Na I

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.32.1468· OSTI ID:5373074

Engstroem, L; Young, L; Somerville, L P; Berry, H G

In a recent spectroscopic study (D. E. Holmgren et al., Phys. Rev. A 31, 677 (1985)), many metastable core-excited quartet levels in Na I have been identified, and based on calculated decay rates (both radiative and autoionizing) some of these levels have been suggested for use in an extreme ultraviolet (xuv) laser. In order to test the theoretical calculations we have used the beam-foil technique to determine experimental lifetimes for eight quartet levels in the core-excited configurations 2p/sup 5/3s3d and 2p/sup 5/3s4s. The agreement between theory and experiment is within a factor of 2, but with systematic discrepancies.

• Research Organization: Physics Division, Argonne National Laboratory, Argonne, Illinois 60439
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5373074
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 32:3; 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
ALKALI METALS
AUTOIONIZATION
CONFIGURATION MIXING
DATA
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
EXPERIMENTAL DATA
EXTREME ULTRAVIOLET RADIATION
INFORMATION
INTERACTIONS
ION SPECTROSCOPY
IONIZATION
LASER RADIATION
LIFETIME
MEASURING METHODS
METALS
NUMERICAL DATA
RADIATIONS
SODIUM
SPECTROSCOPY
ULTRAVIOLET RADIATION