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Title: Resonance-to-intercombination-line ratios of neonlike ions in the relativistic regime

We report measurements of the intensity ratio of the 1s 22s 22p$$5\atop{1/2}$$3d 3/2→1s 22s 22p 6 resonance line to the 1s 22s 22p$$5\atop{3/2}$$3d 5/2→1s 22s 22p 6 intercombination line in neonlike Kr 26+ and Mo 32+. The measurements were performed at the EBIT-I electron beam ion trap facility at the Lawrence Livermore National Laboratory and utilized an x-ray microcalorimeter. The measured ratio for Mo 32+ is in four times closer agreement with theoretical predictions than earlier measurements of ions with lower atomic number. Our measurement thus suggests a narrowing of the disagreement with atomic number, which had not been observed in the previously existing data. This implies that the disagreement with theory may be localized to ions within a range of atomic numbers in which intermediate coupling dominates.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-718380
Journal ID: ISSN 2469-9926; PLRAAN; TRN: US1703225
Grant/Contract Number:
AC52-07NA27344; 4000114313/15/NL/CB
Type:
Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 95; Journal Issue: 6; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE; National Aeronautic and Space Administration (NASA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS
OSTI Identifier:
1400081
Alternate Identifier(s):
OSTI ID: 1361439