S XV - VERSION 10.0.2


The CHIANTI database has the following primary ASCII files for this ion:

  1. s_15.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename:  s_15.elvlc.olg.art.nist
    
    Theoretical energy levels:  Autostructure calculation
    A Breit-Pauli distorted wave implementation for AUTOSTRUCTURE
    Badnell, N.R., 2011, Computer Physics Communications, 182, 1528
    ADSref:  http://adsabs.harvard.edu/abs/2011CoPhC.182.1528B
    
    Observed energy levels (w) 19846410. 
    K Kubicek and H Bruhns and J Braun and J R Crespo Lopez-Urrutia and J Ullrich
    Two-loop {QED} contributions tests withmid-{ZHe}-like ions2009, Journal of Physics: Conference Series, 163, 012007
    ADSref:  https://ui.adsabs.harvard.edu/abs/1982PhyS...25..917S/abstract
    
    Observed energy level (y) 19736790.
    L Schleinkofer and F Bell and H-D Betz and G Trollmann and J Rothermel
    Precision Wavelength Determination of 21P1-11S0and 23P1-11S0Transitions in Helium-Like Sulfur Ions
    1982, Physica Scripta, 25, 6B, 917--923
    
    (Observed) energy levels (1s2s, 1s2p):  Artemyev, A. N.; Shabaev, V. M.; Yerokhin, V. A.; Plunien, G.; Soff, G., 2005, Phys. Rev. A, 72, 2104
    ADSref:  http://adsabs.harvard.edu/abs/2005PhRvA..71f2104A
    
    Observed bound energy levels:  Martin, W. C., Sugar, J., Musgrove, A., and Dalton, G. R., 1995,
    NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
    
    Theoretical energies for n=2, 3 above IP
    Goryaev, F. F.; Vainshtein, L. A.; Urnov, A. M.
    Atomic data for doubly-excited states 2lnl‧ of He-like ions and 1s2lnl‧ of Li-like ions with Z = 6-36 and n = 2 , 3
    2017, ADNDT, 113, 117-257
    adsRef:  http://adsabs.harvard.edu/abs/2017ADNDT.113..117G
    DOI:  10.1016/j.adt.2016.04.002
    
    Theoretical energy levels (n=4,5 above IP):
    calculations of U. Safronova reported in Kato et al., 1997, ADNDT, 67, 225.
    ADS http://adsabs.harvard.edu/abs/1997ADNDT..67..225K
    updated by U. Safronova, 2001, private communication
    
    theoretical energy levels adjusted by SHFTIC file derived from 
    Kubicek, Schleinkofer, Artemyev, NIST, Goryaev (n=2, 3 above IP) and Safronova (n= 4,5,6 above IP energies
    
    
    produced as a part of the  'CHIANTI' atomic database for astrophysical spectroscopy
    K. Dere (GMU) - 2020 June 23
    s_15 IP ev =  3.22378e+03 Ip invcm =    26001513.000 Ip Ryd =     236.94321
    s_16 IP ev =  3.49419e+03 Ip invcm =    28182526.000 Ip Ryd =     256.81807
     
    

  3. s_15.wgfa (radiative data)
  4. contains wavelengths, gf and A values of the transitions. The wavelengths are based on the experimental energy levels and should be the best available. Wavelengths calculated from the theoretical energies are of an indeterminate accuracy and their values are presented as negative values of the calculated wavelength.

     
    %filename:  s_15.wgfa.olg.imp
    
    Theoretical gf and A-values:  Autostructure calculation
    A Breit-Pauli distorted wave implementation for AUTOSTRUCTURE
    Badnell, N.R., 2011, Computer Physics Communications, 182, 1528
    ADSref:  http://adsabs.harvard.edu/abs/2011CoPhC.182.1528B
    
    Observed energy levels (w) 19846410. 
    K Kubicek and H Bruhns and J Braun and J R Crespo Lopez-Urrutia and J Ullrich
    Two-loop {QED} contributions tests withmid-{ZHe}-like ions2009, Journal of Physics: Conference Series, 163, 012007
    ADSref:  https://ui.adsabs.harvard.edu/abs/1982PhyS...25..917S/abstract
    
    Observed energy level (y) 19736790.
    L Schleinkofer and F Bell and H-D Betz and G Trollmann and J Rothermel
    Precision Wavelength Determination of 21P1-11S0and 23P1-11S0Transitions in Helium-Like Sulfur Ions
    1982, Physica Scripta, 25, 6B, 917--923
    
    Observed energy levels (1s2s, 1s2p):  Artemyev, A. N.; Shabaev, V. M.; Yerokhin, V. A.; Plunien, G.; Soff, G., 2005, Phys. Rev. A, 72, 2104
    ADSref:  http://adsabs.harvard.edu/abs/2005PhRvA..71f2104A
    
    Observed bound energy levels:  Martin, W. C., Sugar, J., Musgrove, A., and Dalton, G. R., 1995,
    NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
    
    Theoretical energies for n=2, 3 above IP
    Goryaev, F. F.; Vainshtein, L. A.; Urnov, A. M.
    Atomic data for doubly-excited states 2lnl‧ of He-like ions and 1s2lnl‧ of Li-like ions with Z = 6-36 and n = 2 , 3
    2017, ADNDT, 113, 117-257
    adsRef:  http://adsabs.harvard.edu/abs/2017ADNDT.113..117G
    DOI:  10.1016/j.adt.2016.04.002
    
    Theoretical energy levels (n=4,5 above IP):
    calculations of U. Safronova reported in Kato et al., 1997, ADNDT, 67, 225.
    ADS http://adsabs.harvard.edu/abs/1997ADNDT..67..225K
    updated by U. Safronova, 2001, private communication
    
    theoretical energy levels adjusted by SHFTIC file derived from 
    Kubicek, Schleinkofer, Artemyev, NIST, Goryaev (n=2, 3 above IP) and Safronova (n= 4,5,6 above IP energies
    
    
    two-photon A-value:  Derevianko, A.; Johnson, W. R., 1997, Phys Rev A, 56, 1288 
     Two-photon decay of 2 1S0 and 2 3S1 states of heliumlike ions  
     ADSref:  https://ui.adsabs.harvard.edu/abs/1997PhRvA..56.1288D/abstract 
    
    minimum branching ratio =   1.00e-04
    wavelengths determined from energy levels
    
    
    sorted by lvl12
    elvlcName = s_15.elvlc
     wgfaName = s_15.wgfa-srt
     allWvl =   1
     minDiff =      0.00010
     outfile = s_15.wgfa.olg.imp
     
    produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy
     K. Dere (GMU) - 2020 June 23
     P. Young (GSFC) - 2020 Nov 12, updated 2-photon rate.
    

  5. s_15.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    
    K. Dere (GMU) - 2020 June 24
    produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy
    
    collision strengths provided in the range   4.50e+04 to   4.50e+08 K
    
    DOI:  http://dx.doi.org/10.1088/0953-4075/34/15/320
    adsRef:  http://adsabs.harvard.edu/abs/2001JPhB...34.3179W
    A radiation-damped R-matrix approach to the electron-impact excitation of helium-like ions for diagnostic application to fusion and astrophysical plasmas
    Whiteford, A. D.; Badnell, N. R.; Ballance, C. P.; O'Mullane, M. G.; Summers, H. P.; Thomas, A. L.
    
    filename: s_15.scups
    

  7. (proton collisional data) Not available in this VERSION.

  8. The html table below contains the radiative data of the brightest lines sorted in wavelength

    s_15_table.html (html table)

    Page created by Giulio Del Zanna on Wed Jun 8 16:12:42 2022