Improved low-lying energy levels determined from solar coronal forbidden and spin-forbidden lines in the 500-1500 A range

Feldman, U; Doschek, G A

doi:10.1016/j.adt.2007.06.002

Title: Improved low-lying energy levels determined from solar coronal forbidden and spin-forbidden lines in the 500-1500 A range

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Abstract

We list observed parity-forbidden and spin-forbidden lines in the 500-1600 A range emitted by solar coronal plasmas and derive improved energy levels from their wavelengths. The lines, emitted by astrophysical abundant elements, belong to transitions within the ground configurations of the type ns{sup 2} np {sup k}, for n = 2, 3 and k = 0-5, and between the lowest term of the first excited configuration 2s2p {sup k+1} and the 2s{sup 2}2p {sup k} ground configurations for k = 0, 1, 2. For each line we give the newly measured wavelength, and the measured or predicted wavelength from the NIST Atomic Spectra Database (ASD) (which except for a few cases includes the previously reported compilation of Kaufman and Sugar [J. Phys. Chem. Ref. Data 15 (1986) 321]), and the values of the transition probability taken from the ASD and CHIANTI database. The list contains measured wavelengths of 136 lines of which over 100 were not available for the Kaufman and Sugar compilation. In addition we provide energy levels that were derived from the reported lines.

Authors:

Feldman, U ^[1]; Doschek, G A ^[2]

ARTEP, Inc., 2922 Excelsior Springs, Ellicott City, MD 21042 (United States)
Space Science Division, Naval Research Laboratory, Washington, DC 20375-5320 (United States)

Publication Date:: Sat Sep 15 00:00:00 EDT 2007

OSTI Identifier:: 20976814

Resource Type:: Journal Article

Journal Name:: Atomic Data and Nuclear Data Tables

Additional Journal Information:: Journal Volume: 93; Journal Issue: 5; Other Information: DOI: 10.1016/j.adt.2007.06.002; PII: S0092-640X(07)00038-1; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0092-640X

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ENERGY LEVELS; NUCLEAR DATA COLLECTIONS; PARITY; PLASMA; PROBABILITY; SOLAR CORONA; SPIN; WAVELENGTHS

Citation Formats


                    Feldman, U, Space Science Division, Naval Research Laboratory, Washington, DC 20375-5320, and Doschek, G A. Improved low-lying energy levels determined from solar coronal forbidden and spin-forbidden lines in the 500-1500 A range.  United States: N. p., 2007. 
        Web.  doi:10.1016/j.adt.2007.06.002.

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                    Feldman, U, Space Science Division, Naval Research Laboratory, Washington, DC 20375-5320, & Doschek, G A. Improved low-lying energy levels determined from solar coronal forbidden and spin-forbidden lines in the 500-1500 A range.  United States.  https://doi.org/10.1016/j.adt.2007.06.002

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                    Feldman, U, Space Science Division, Naval Research Laboratory, Washington, DC 20375-5320, and Doschek, G A. 2007.  
        "Improved low-lying energy levels determined from solar coronal forbidden and spin-forbidden lines in the 500-1500 A range".  United States.  https://doi.org/10.1016/j.adt.2007.06.002.

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@article{osti_20976814,

  title        = {Improved low-lying energy levels determined from solar coronal forbidden and spin-forbidden lines in the 500-1500 A range},

  author       = {Feldman, U and Space Science Division, Naval Research Laboratory, Washington, DC 20375-5320 and Doschek, G A},

  abstractNote = {We list observed parity-forbidden and spin-forbidden lines in the 500-1600 A range emitted by solar coronal plasmas and derive improved energy levels from their wavelengths. The lines, emitted by astrophysical abundant elements, belong to transitions within the ground configurations of the type ns{sup 2} np {sup k}, for n = 2, 3 and k = 0-5, and between the lowest term of the first excited configuration 2s2p {sup k+1} and the 2s{sup 2}2p {sup k} ground configurations for k = 0, 1, 2. For each line we give the newly measured wavelength, and the measured or predicted wavelength from the NIST Atomic Spectra Database (ASD) (which except for a few cases includes the previously reported compilation of Kaufman and Sugar [J. Phys. Chem. Ref. Data 15 (1986) 321]), and the values of the transition probability taken from the ASD and CHIANTI database. The list contains measured wavelengths of 136 lines of which over 100 were not available for the Kaufman and Sugar compilation. In addition we provide energy levels that were derived from the reported lines.},

  doi          = {10.1016/j.adt.2007.06.002},

  url          = {https://www.osti.gov/biblio/20976814},
  journal      = {Atomic Data and Nuclear Data Tables},

  issn         = {0092-640X},

  number       = 5,

  volume       = 93,

  place        = {United States},

  year         = {Sat Sep 15 00:00:00 EDT 2007},

  month        = {Sat Sep 15 00:00:00 EDT 2007}

}

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