Oscillator strengths of the 2s /sup 2/S/sub 1/2/-2p /sup 2/P/sup o//sub 1/2,3/2/ transitions in Fe XXIV and the 2s/sup 2/ /sup 1/S/sub 0/-2s2p /sup 3/P/sup o//sub 1/ transition in Fe XXIII

Journal Article · Sat Jul 01 00:00:00 EDT 1978 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.18.208· OSTI ID:6950294

Dietrich, D D; Leavitt, J A; Bashkin, S; Conway, J G; Gould, H; MacDonald, D; Marrus, R; Johnson, B M; Pegg, D J

We have used the beam-foil technique to measure the mean lives of the upper levels of: (i) the 2s /sup 2/S/sub 1/2/ - 2p /sup 2/P/sup o//sub 1/2,3/2/ resonance transitions (at 255 and 192 A) in lithiumlike Fe XXIV and (ii) the 2s/sup 2/ /sup 1/S/sub 0/ - 2s2p /sup 3/P/sup o//sub 1/ intersystem transition (at 264 A) in berylliumlike Fe XXIII. The measured mean lives are tau (2p /sup 2/P/sup o//sub 1/2/) = 0.55 +- 0.02, tau (2p /sup 2/P/sup o//sub 3/2/) = 0.235 +- 0.01, and tau (2s2p /sup 3/P/sup o//sub 1/) = 13 +- 4 ns. Oscillator strengths derived from the Fe XXIV results are in good agreement with recent relativistic multiconfiguration Hartree-Fock (MCHF) ''length'' gauge calculations; the Fe XXIII result is not in agreement with these MCHF calculations, but appears to be in agreement with recent intermediate coupling calculations.

• Research Organization: University of Arizona, Tucson, Arizona 85721
• OSTI ID: 6950294
• Journal Information: Phys. Rev., A; (United States), Vol. 18:1
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
IRON IONS
ENERGY-LEVEL TRANSITIONS
ION SPECTROSCOPY
MULTICHARGED IONS
CARBON
FOILS
ION BEAMS
MEV RANGE 100-1000
OSCILLATOR STRENGTHS
ATOMIC IONS
BEAMS
CHARGED PARTICLES
ELEMENTS
ENERGY RANGE
IONS
MEV RANGE
NONMETALS
SPECTROSCOPY
640300* - Atomic
Molecular & Chemical Physics