Oscillator strengths for highly ionized atomic systems. [Summaries of research activities at Pennsylvania State Univ]

Technical Report · Mon Jan 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/6027125· OSTI ID:6027125

Fischer, C F

Evidence has been found recently that the cascade process may be more important in the analysis of beam-foil decay curves than anticipated. In order to assist the analysis of such data the multiconfiguration Hartree--Fock program (MCHF77) has been applied to the theoretical study of several transitions which are part of a cascade process for resonance transitions )3p/sup 2/, 3s 3d)/sup 1/D - )3p 3d, 3s 4f)/sup 1/F and )3s 3d)/sup 3/D - )3p 3d, 3s 4f)/sup 3/F in the Mg sequence. For higher members of the sequence, MCHF77 was modified to include the relativistic effects which shift the energy of a configuration as a whole, and intermediate coupling calculations were performed. The 4s 4p /sup 1/P - )4p/sup 2/, 4s 4d)/sup 1/D transitions in the Zn I sequence were also examined. A strong interaction exists between 4p/sup 2/ and 4s 4d /sup 1/D and it has been shown that much of the earlier experimental material concerning the /sup 1/D terms are in error. Comparison with a few recent experimental investigations shows good agreement. Relatively few levels have been identified in Fe XIV. Because of the importance of the iron ions both in astrophysics and tokamak plasma research, a line list has been produced for levels with three electrons in the M shell. gf-values for allowed transitions and intercombination lines are tabulated. A list of publications is included.

• Research Organization: Pennsylvania State Univ., University Park (USA)
• Sponsoring Organization: USDOE
• OSTI ID: 6027125
• Report Number(s): COO-4264-5
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
ATOMIC IONS
CASCADE SHOWERS
CHARGED PARTICLES
COUPLING
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
HARTREE-FOCK METHOD
ION SPECTROSCOPY
IONS
IRON IONS
MAGNESIUM
METALS
MULTICHARGED IONS
OSCILLATOR STRENGTHS
RELATIVISTIC RANGE
RESONANCE
SHOWERS
SPECTRAL SHIFT
SPECTROSCOPY
ZINC