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Title: Relativistic MR–MP Energy Levels for L-shell Ions of Silicon

Journal Article · · The Astrophysical Journal. Supplement Series (Online)
ORCiD logo [1];  [1]; ORCiD logo [2]
  1. Univ. of Puerto Rico, Cayey (Puerto Rico). Dept. of Chemistry
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physics Division
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Level energies are reported for Si v, Si vi, Si vii, Si viii, Si ix, Si x, Si xi, and Si xii. The energies have been calculated with the relativistic Multi-Reference Møller–Plesset Perturbation Theory method and include valence and K-vacancy states with nl up to 5f. The accuracy of the calculated level energies is established by comparison with the recommended data listed in the National Institute of Standards and Technology (NIST) online database. The average deviation of valence level energies ranges from 0.20 eV in Si v to 0.04 eV in Si xii. For K-vacancy states, the available values recommended in the NIST database are limited to Si xii and Si xiii. The average energy deviation is below 0.3 eV for K-vacancy states. The extensive and accurate data set presented here greatly augments the amount of available reference level energies. Here, we expect our data to ease the line identification of L-shell ions of Si in celestial sources and laboratory-generated plasmas, and to serve as energy references in the absence of more accurate laboratory measurements.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1418924
Report Number(s):
LLNL-JRNL-737514; TRN: US1801314
Journal Information:
The Astrophysical Journal. Supplement Series (Online), Vol. 234, Issue 1; ISSN 1538-4365
Publisher:
American Astronomical Society/IOPCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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Cited By (2)

Relativistic MR-MP Energy Levels for L-shell Ions of Sulfur and Argon journal October 2018
Relativistic MR-MP Energy Levels for L-shell Ions of Iron journal November 2019

Linked Research (1)

Figures / Tables (8)

Figure 1(p. 11)figure Figure 1
Table 1(p. 12)table Table 1
Table 2(p. 13)table Table 2
Table 3(p. 13)table Table 3
Table 4(p. 14)table Table 4
Table 5(p. 14)table Table 5
Figure 2(p. 15)figure Figure 2
Table 6(p. 15)table Table 6

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Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
atomic data
line: identification