The CHIANTI database has the following primary ASCII files for this ion:
contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.
%filename: ne_8.elvlc Theoretical energy levels: Autostructure calculation with energy levels optimized to match to the observed energies 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 optimization by means of AS SHFTIC file with corrections from the following data % energies for 2s2.2p levels: Sapirstein, J., Cheng, K., 2011, Phys. Rev. A, 83, 012504 S-matrix calculations of energy levels of the lithium isoelectronic sequence ADSref: http://adsabs.harvard.edu/abs/2011PhRvA..83a2504S these give an energy for level 3 that is commensurate with the wavelength of 770.428+/0.007 of Peter & Judge, 1999, ApJ, 522,1148 adsRef: http://adsabs.harvard.edu/abs/1999ApJ...522.1148P and Dammasch et al. 1999, A&A, 346,285. adsRef: http://adsabs.harvard.edu/abs/1999A%26A...346..285D the observed value of level 3 is derived from these experimental measurements Observed bound energy levels n=2, 3, 4, 5, 6, 7 and above the IP, n=2,3 : Kramida, A. E.; Buchet-Poulizac, M.-C., Energy levels and spectral lines of Ne VIII ADSref: http://adsabs.harvard.edu/abs/2006EPJD...39..173K DOI: 10.1140/epjd/e2006-00122-3 Bibcode: 2006EPJD...39..173K also in: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2012). NIST Atomic Spectra Database (ver. 5.0), [Online]. Available: http://physics.nist.gov/asd [2012, September 14]. National Institute of Standards and Technology, Gaithersburg, MD. Theoretical energies for n=2, 3 above IP Goryaev, F. F.; Vainshtein, L. A.; Urnov, A. M. Atomic data for doubly-excited states 2ln 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 produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy K. Dere (GMU) - 2017 August 04
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: ne_8.wgfa theoretical gf and A-values: Optimized 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 optimization by means of AS SHFTIC file with corrections from the following data Observed bound energy levels n=2, 3, 4, 5, 6, 7 and above the IP, n=2 : Kramida, A. E.; Buchet-Poulizac, M.-C., Energy levels and spectral lines of Ne VIII ADSref: http://adsabs.harvard.edu/abs/2006EPJD...39..173K DOI: 10.1140/epjd/e2006-00122-3 Bibcode: 2006EPJD...39..173K also in: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2012). NIST Atomic Spectra Database (ver. 5.0), [Online]. Available: http://physics.nist.gov/asd [2012, September 14]. National Institute of Standards and Technology, Gaithersburg, MD. 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=3,4,5 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 wavelengths determined from energy levels minimum branching ratio = 1.00e-04 allWvl = 1 minDiff = 0.00010 outfile = ne_8.wgfa.olg.imp produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy K. Dere (GMU) - 2017 August 04 %File processed with wgfa_tidy by pryoung on 6-Mar-2019 %File processed with wgfa_tidy by pryoung on 31-May-2023
contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).
K. Dere (GMU) - 2012 December 23 produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy collision strengths provided in the range 1.28e+04 to 1.28e+08 K ADS ref: https://ui.adsabs.harvard.edu/abs/2011A%26A...528A..69L/abstract DOI: https://ui.adsabs.harvard.edu/link_gateway/2011A&A...528A..69L/doi:10.1051/0004-6361/201016417 Astronomy & Astrophysics, Volume 528, id.A69, 15 pp including Auger and radiation damping R-matrix electron-impact excitation data for the Li-like iso-electronic sequence Liang, G. Y.; Badnell, N. R. Theoretical collision strengths: %filename: ne_8.scups
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