Recent Beam-Foil Mean-Life Measurements in Fluorine V-VIII

  • D. J. G. Irwin
  • R. Drouin


For transitions below 1000 Å the mean lives of foil-excited states in fluorine received little attention prior to 1974: only nine levels had been studied 1–4. In that year, complementary projects to measure radiative mean lives in fluorine were undertaken at the University of Alberta and Université Laval. At Alberta, a 2 MV Van de Graaff machine has been used with a l m. normal incidence spectrometer to measure beam-foil decay curves in FI-IV above about 350 Å 5. At Laval, a 7.5 MV Van de Graaff machine has been used in conjunction with a 2.2 m. grazing incidence spectrometer to study spectra and mean lives of F V-VIII in the spectral range 70–350Å. It is the purpose of this report to present the results of the latter project that have been analysed so far.


Oscillator Strength Decay Curve Small Step Size Dial Gauge Beam Velocity 
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  1. 1.
    K. Berkner, W.S. Cooper III, S.N. Kaplan and R.V. Pyle, Phys. Letters l6, 35(1965).ADSCrossRefGoogle Scholar
  2. 2.
    L. Barrette, E.J. Knystautas, B. Neveu and R. Drouin, Phys. Letters 32A, 435(l970).Google Scholar
  3. 3.
    D.J.G. Irwin and A.E. Livingston, Can. J. Phys. 51, 848(l973).CrossRefGoogle Scholar
  4. 4.
    L. Barrette and R. Drouin, Can. J. Spectrosc. l8, 50(1973).Google Scholar
  5. 5.
    E.H. Pinnington, D.J.G. Irwin, A.E. Livingston and J.A. Kernahan (to be published).Google Scholar
  6. 6.
    L. Barrette and R. Drouin, Phys. Scripta 10, 213(1974).ADSCrossRefGoogle Scholar
  7. 7.
    L. Barrette, D. Sc. Thesis, Departement de physique, Université Laval (1975).Google Scholar
  8. 8.
    J.A. Leavitt, J.W. Robson and J.O. Stoner, Jr., Nucl. Instr. Methods 110, 423(1973).CrossRefGoogle Scholar
  9. 9.
    R.L. Kelly and L.J. Palumbo, NRL Report 7599 (Washington DC: Naval Research Laboratory, 1973).Google Scholar
  10. 10.
    A.M. Cantuú, E. Jannitti and G. Tondello, J. Opt. Soc. Am. 64, 699(1974). ADSCrossRefGoogle Scholar
  11. 11.
    D.J. Pegg, P.M. Griffin, H.H. Haselton, R. Laubert J.R. Mowat, R.S. Thoe, R.S. Peterson, and I.A. Sellin, Phys. Rev. 10 745(1974).ADSGoogle Scholar
  12. 12.
    L.C. Northcliffe and R.F. Schilling, Nuclear Data Tables, Sec. A 7, Nos. 3 and 4(l970).Google Scholar
  13. 13.
    D.J.G. Irwin and A.E. Livingston (submitted to Can. J. Phys., October 1974).Google Scholar
  14. 14.
    D.J.G. Irwin and A.E. Livingston, Computer Phys. Commun. 7, 95(1974).ADSCrossRefGoogle Scholar
  15. 15.
    M.W. Smith and W.L. Wiese, Ap. J. Suppl. Ser. 23, 103(1971).ADSCrossRefGoogle Scholar
  16. 16.
    W.L. Wiese, M.W. Smith, and B.M. Glennon, NSRDS-NBS4, Vol. I (l966).Google Scholar
  17. 17.
    A.W. Weiss, J. Res. Natl. Bur. Stand. U.S.A. 71, 163(1967).Google Scholar
  18. 18.
    E.J. Knystautas and R. Drouin, J. Phys. B (in press).Google Scholar
  19. 19.
    D.G. Hummer and D.W. Norcross, Mon. Not. R. astr. Soc. 168, 263(1974).ADSGoogle Scholar
  20. 20.
    L. Barrette, D.J.G. Irwin and R. Drouin, Phys. Scr. (in press).Google Scholar

Copyright information

© Plenum Press, New York 1976

Authors and Affiliations

  • D. J. G. Irwin
    • 1
  • R. Drouin
    • 2
  1. 1.College of Cape BretonSydneyCanada
  2. 2.Université LavalCanada

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