Effective L -shell fluorescence yields for sodiumlike and neonlike low-lying autoionizing states

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.2758· OSTI ID:5555351

Chen, M H ^[1]

---

1. High Temperature Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550 (US)

The statistically averaged {ital L}-shell fluorescence yields for the doubly excited 3{ital l}3{ital l}{prime} and 3{ital l}4{ital l}{prime} configurations of Na- and Ne-like ions have been calculated for ions with 18{le}{ital Z}{le}92 using Dirac-Fock wave functions. The average {ital n}=3{r arrow}2 radiative rates and Auger rates for the 3{ital l}3{ital l}{prime} states of the Na-like ions scale as {ital Z}{sup 5.1} and {ital Z}{sup 0.71}, respectively. The procedure for calculating the average fluorescence yield as ratio between the average x-ray rate and average total decay rate underestimates the average fluorescence yield by as much as a factor of 3 for low-{ital Z} ions and overestimates by 50% for heavy ions. Inclusion of {ital E}2 transitions leads to a 25% increase in the average fluorescence yield for the Na-like 3{ital l}3{ital l}{prime} states at {ital Z}=80.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5555351
• Journal Information: Physical Review (Section) A: General Physics; (USA), Journal Name: Physical Review (Section) A: General Physics; (USA) Vol. 40:5; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC IONS
ATOMS
AUGER EFFECT
AUTOIONIZATION
CHARGED PARTICLES
ELECTRONIC STRUCTURE
FLUORESCENCE
IONIZATION
IONS
ISOELECTRONIC ATOMS
L SHELL
LUMINESCENCE
MULTICHARGED IONS