Skip to main content
SpringerLink
Log in

Theoretical emission line strengths for the beryllium-like ion Sxiii compared to XUV observations of solar flares

  • Published:
Solar Physics Aims and scope Submit manuscript

Abstract

A comparison of Skylab S082A observations for several solar flares with calculations of the electron temperature sensitive emission line ratio R 1 = I(2s2p 1 P − 2s 2 1 S)/I(2s2p 3 P 1 - 2s 2 1 S) = = I(256.68 Å)/I(491.45 Å) in Be-like SXIII reveals good agreement between theory and experiment, which provides observational support for the accuracy of the adopted atomic data. However, observed values of the electron density sensitive ratio R 2 = I(2s2p 1 P − 2s 2 1 S)/I(2p 2 3 P 2 - 2s2p 3 P 2) = = I(256.68 Å)/I(308.96 Å) all lie below the theoretical high density limit, which is probably due to blending in the 308.96 Å line.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Arnaud, M. and Rothenflug, R.: 1985, Astron. Astrophys. Suppl. 60, 425.

    Google Scholar 

  • Berrington, K. A.: 1985, J. Phys. B18, L395.

    Google Scholar 

  • Berrington, K. A., Burke, P. G., Dufton, P. L., and Kingston, A. E.: 1977, J. Phys. B10, 1465.

    Google Scholar 

  • Berrington, K. A., Burke, P. G., Dufton, P. L., and Kingston, A. E.: 1981, Atomic Data Nucl. Data Tables 26, 1.

    Google Scholar 

  • Berrington, K. A., Burke, P. G., Dufton, P. L., and Kingston, A. E.: 1985, Atomic Data Nucl. Data Tables 33, 195.

    Google Scholar 

  • Dere, K. P.: 1978, Astrophys. J. 221, 1062.

    Google Scholar 

  • Dere, K. P.: 1982, Solar Phys. 77, 77.

    Google Scholar 

  • Dere, K. P. and Cook, J. W.: 1979, Astrophys. J. 229, 772.

    Google Scholar 

  • Dere, K. P., Mason, H. E., Widing, K. G., and Bhatia, A. K.: 1979, Astrophys. J. Suppl. 40, 341.

    Google Scholar 

  • Doyle, J. G.: 1987, Atomic Data Nucl. Data Tables 37, 441.

    Google Scholar 

  • Doyle, J. G., Kingston, A. E., and Reid, R. H. G.: 1980, Astron. Astrophys. 90, 97.

    Google Scholar 

  • Doyle, J. G., Dufton, P. L., Keenan, F. P., and Kingston, A. E.: 1983, Solar Phys. 89, 243.

    Google Scholar 

  • Dufton, P. L.: 1977, Comp. Phys. Commun. 13, 25.

    Google Scholar 

  • Dufton, P. L., Doyle, J. G., and Kingston, A. E.: 1979, Astron. Astrophys. 78, 318.

    Google Scholar 

  • Dufton, P. L., Kingston, A. E., and Scott, N. S.: 1983, J. Phys. B16, 3053.

    Google Scholar 

  • Dufton, P. L., Berrington, K. A., Burke, P. G., and Kingston, A. E.: 1978, Astron. Astrophys. 62, 111.

    Google Scholar 

  • Dufton, P. L., Kingston, A. E., Doyle, J. G., and Widing, K. G.: 1983, Monthly Notices Roy. Astron. Soc. 205, 81.

    Google Scholar 

  • Elwert, G.: 1952, Z. Naturforsch. 7A, 432.

    Google Scholar 

  • Fawcett, B. C.: 1975, Atomic Data Nucl. Data Tables 16, 135.

    Google Scholar 

  • Huang, L. K., Lippmann, S., Yu, T. L., Stratton, B. C., Moos, H. W., Finkenthal, M., Hodge, W. L., Rowan, W. L., Richards, B., Phillips, P. E., and Bhatia, A. K.: 1987, Phys. Rev. A35, 2919.

    Google Scholar 

  • Keenan, F. P.: 1988, Phys. Scripta 37, 57.

    Google Scholar 

  • Keenan, F. P. and Berrington, K. A.: 1985, Solar Phys. 99, 25.

    Google Scholar 

  • Keenan, F. P., Widing, K. G., and McCann, S. M.: 1988, Astrophys. J. (in press).

  • Keenan, F. P., Kingston, A. E., Dufton, P. L., Doyle, J. G., and Widing, K. G.: 1984a, Solar Phys. 94, 91.

    Google Scholar 

  • Keenan, F. P., Berrington, K. A., Burke, P. G., Kingston, A. E., and Dufton, P. L.: 1984b, Monthly Notices Roy. Astron. Soc. 207, 459.

    Google Scholar 

  • Kelly, R. L. and Palumbo, L. J.: 1973, NRE Report 7599, Washington DC.

  • Lippmann, S., Finkenthal, M., Huang, L. K., Moos, H. W. Stratton, B. C., Yu, T. L., Bhatia, A. K., and Hodge, W. L.: 1987, Astrophys. J. 316, 819.

    Google Scholar 

  • Muhlethaler, H. P. and Nussbaumer, H.: 1976, Astron. Astrophys. 48, 109.

    Google Scholar 

  • Norrington, P. H. and Grant, EI.P.: 1987, J. Phys. B20, 4869.

    Google Scholar 

  • Scott, N. S. and Burke, P. S.: 1980, J. Phys. B13, 4299.

    Google Scholar 

  • Seaton, M. J.: 1964, Monthly Notices Roy. Astron. Soc. 127, 191.

    Google Scholar 

  • Shorer, P. and Lin, C. D.: 1977, Phys. Rev. A16, 2068.

    Google Scholar 

  • Tousey, R., Bartoe, J.-D. F., Brueckner, G. E., and Purcell, J. D.: 1977, Appl. Opt. 16, 870.

    Google Scholar 

  • Tunnell, T. W. and Bhalla, C. P.: 1979, Phys. Letters A72, 19.

    Google Scholar 

  • Widing, K. G. and Cook, J. W.: 1987, Astrophys. J. 320, 913.

    Google Scholar 

  • Widing, K. G. and Spicer, D. S.: 1980, Astrophys. J. 242, 1243.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Pure and Applied Physics, The Queen's University of Belfast, BT7 1NN, Belfast, N. Ireland

    F. P. Keenan & S. M. McCann

  2. E.O. Hulburt Center for Space Research, Naval Research Laboratory, 20375, Washington, DC, U.S.A.

    K. G. Widing

Authors
  1. F. P. Keenan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. S. M. McCann
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. K. G. Widing
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Keenan, F.P., McCann, S.M. & Widing, K.G. Theoretical emission line strengths for the beryllium-like ion Sxiii compared to XUV observations of solar flares. Sol Phys 117, 69–75 (1988). https://doi.org/10.1007/BF00148573

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00148573

Keywords

Search

Navigation