Abstract

The 3s2 1S0–3s3p1P1, 3s3p1P1–3s3d1D2, and 3s3p3P2–3s3d3D3 transitions in seven Mg-like ions from Sr26+ to Rh33+ were observed with a laser-produced plasma and a 2.2-m grazing-incidence spectrograph. The wavelengths of the 3s2 1S0–3s3p1P1 transition are compared with tokamak observations and with theoretical values obtained with the relativistic random phase approximation.

© 1983 Optical Society of America

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References

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  1. E. Hinnov, “Highly ionized atoms in tokamak discharges,” Phys. Rev. A 14, 1533–1541 (1976).
    [Crossref]
  2. P. G. Burkhalter, J. Reader, and R. D. Cowan, “Spectra of Mo xxx, xxxi, and xxxii from a laser-produced plasma,” J. Opt. Soc. Am. 67, 1521–1525 (1977).
    [Crossref]
  3. M. W. D. Mansfield, N. J. Peacock, C. C. Smith, M. G. Hobby, and R. D. Cowan, “The XUV spectra of highly ionized molybdenum,” J. Phys. B 11, 1521–1544 (1978).
    [Crossref]
  4. M. Finkenthal, E. Hinnov, S. Cohen, and S. Suckewer, “The 3s2 1S0–3s 3p3P1magnesium sequence intercombination lines from Sc x to Mo xxxi observed in the PLT tokamak,” Phys. Lett. A 91, 284 (1982).
    [Crossref]
  5. U. Feldman, G. A. Doschek, D. J. Nagel, W. E. Behring, and L. Cohen, “Transitions of Fe xviii and Fe xix observed in laser-produced plasmas,” Astrophys. J. 183, L43–L45 (1973).
    [Crossref]
  6. E. Ya. Kononov, K. N. Koshelev, L. I. Podobedova, S. V. Chekalin, and S. S. Churilov, “Identification of the solar spectra of multi-charged iron ions on the basis of laboratory measurements,” J. Phys. B 9, 565–575 (1976).
    [Crossref]
  7. R. L. Kelly and L. J. Palumbo, Atomic and Ionic Emission Lines Below 2000 Angstroms, Hydrogen through Krypton, (U.S. Government Printing Office, Washington, D.C., 1973).
  8. J. Reader, G. L. Epstein, and J. O. Ekberg, “Spectra of Rb ii, Sr iii, Y iv, Zr v, Nb vi, and Mo vii in the vacuum ultraviolet,” J. Opt. Soc. Am. 62, 273–284 (1972).
    [Crossref]
  9. J. O. Ekberg, J. E. Hansen, and J. Reader, “Analysis of the spectrum of seven-times-ionized molybdenum (Mo viii) and isoelectronic comparison of the spectra Y v–Mo viii,” J. Opt. Soc. Am. 62, 1143–1148 (1972).
    [Crossref]
  10. J. -F. Wyart, J. Reader, and A. Ryabtsev, “3d–4p transitions in the zinclike and copperlike ions Y x, xi; Zr xi, xii; Nb xii, xiii; and Mo xiii, xiv,” J. Opt. Soc. Am. 71, 692–698 (1981).
    [Crossref]
  11. N. Schweitzer, M. Klapisch, J. L. Schwob, M. Finkenthal, A. Bar-Shalom, P. Mandelbaum, and B. S. Fraenkel, “Nickel-like spectra of elements Y xii to Ag xx from a vacuum spark,” J. Opt. Soc. Am. 71, 219–226 (1981).
    [Crossref]
  12. N. Acquista and J. Reader, “Spectrum and energy levels of nine-times ionized strontium (Sr x),” J. Opt. Soc. Am. 71, 569–573 (1981).
    [Crossref]
  13. B. C. Fawcett and R. W. Hayes, “Spectra in the period between copper and bromine produced with the aid of a 4 GW laser,” J. Opt. Soc. Am. 65, 623–627 (1975).
    [Crossref]
  14. P. Shorer, C. D. Lin, and W. R. Johnson, “Oscillator strengths for the magnesium isoelectronic sequence,” Phys. Rev. A 16, 1109–1116 (1977). Values for the ions Sr26+ to Rh33+ were communicated personally by the late P. Shorer.
    [Crossref]
  15. M. Klapisch, R. Perel, and D. Weil, “Theoretical energy levels and wavelengths for some spectra of highly ionized molybdenum between Mo xl and Mo xxiv,” (1976).
  16. K. T. Cheng and W. R. Johnson, “Excitation energies and line strengths in the Mg isoelectronic sequence,” Phys. Rev. A 16, 263–272 (1977).
    [Crossref]
  17. J. Reader, G. Luther, and N. Acquista, “Spectrum and energy levels of thirteen-times ionized molybdenum (Mo xiv),” J. Opt. Soc. Am. 69, 144–149 (1979).
    [Crossref]

1982 (1)

M. Finkenthal, E. Hinnov, S. Cohen, and S. Suckewer, “The 3s2 1S0–3s 3p3P1magnesium sequence intercombination lines from Sc x to Mo xxxi observed in the PLT tokamak,” Phys. Lett. A 91, 284 (1982).
[Crossref]

1981 (3)

1979 (1)

1978 (1)

M. W. D. Mansfield, N. J. Peacock, C. C. Smith, M. G. Hobby, and R. D. Cowan, “The XUV spectra of highly ionized molybdenum,” J. Phys. B 11, 1521–1544 (1978).
[Crossref]

1977 (3)

P. Shorer, C. D. Lin, and W. R. Johnson, “Oscillator strengths for the magnesium isoelectronic sequence,” Phys. Rev. A 16, 1109–1116 (1977). Values for the ions Sr26+ to Rh33+ were communicated personally by the late P. Shorer.
[Crossref]

K. T. Cheng and W. R. Johnson, “Excitation energies and line strengths in the Mg isoelectronic sequence,” Phys. Rev. A 16, 263–272 (1977).
[Crossref]

P. G. Burkhalter, J. Reader, and R. D. Cowan, “Spectra of Mo xxx, xxxi, and xxxii from a laser-produced plasma,” J. Opt. Soc. Am. 67, 1521–1525 (1977).
[Crossref]

1976 (2)

E. Hinnov, “Highly ionized atoms in tokamak discharges,” Phys. Rev. A 14, 1533–1541 (1976).
[Crossref]

E. Ya. Kononov, K. N. Koshelev, L. I. Podobedova, S. V. Chekalin, and S. S. Churilov, “Identification of the solar spectra of multi-charged iron ions on the basis of laboratory measurements,” J. Phys. B 9, 565–575 (1976).
[Crossref]

1975 (1)

1973 (1)

U. Feldman, G. A. Doschek, D. J. Nagel, W. E. Behring, and L. Cohen, “Transitions of Fe xviii and Fe xix observed in laser-produced plasmas,” Astrophys. J. 183, L43–L45 (1973).
[Crossref]

1972 (2)

Acquista, N.

Bar-Shalom, A.

Behring, W. E.

U. Feldman, G. A. Doschek, D. J. Nagel, W. E. Behring, and L. Cohen, “Transitions of Fe xviii and Fe xix observed in laser-produced plasmas,” Astrophys. J. 183, L43–L45 (1973).
[Crossref]

Burkhalter, P. G.

Chekalin, S. V.

E. Ya. Kononov, K. N. Koshelev, L. I. Podobedova, S. V. Chekalin, and S. S. Churilov, “Identification of the solar spectra of multi-charged iron ions on the basis of laboratory measurements,” J. Phys. B 9, 565–575 (1976).
[Crossref]

Cheng, K. T.

K. T. Cheng and W. R. Johnson, “Excitation energies and line strengths in the Mg isoelectronic sequence,” Phys. Rev. A 16, 263–272 (1977).
[Crossref]

Churilov, S. S.

E. Ya. Kononov, K. N. Koshelev, L. I. Podobedova, S. V. Chekalin, and S. S. Churilov, “Identification of the solar spectra of multi-charged iron ions on the basis of laboratory measurements,” J. Phys. B 9, 565–575 (1976).
[Crossref]

Cohen, L.

U. Feldman, G. A. Doschek, D. J. Nagel, W. E. Behring, and L. Cohen, “Transitions of Fe xviii and Fe xix observed in laser-produced plasmas,” Astrophys. J. 183, L43–L45 (1973).
[Crossref]

Cohen, S.

M. Finkenthal, E. Hinnov, S. Cohen, and S. Suckewer, “The 3s2 1S0–3s 3p3P1magnesium sequence intercombination lines from Sc x to Mo xxxi observed in the PLT tokamak,” Phys. Lett. A 91, 284 (1982).
[Crossref]

Cowan, R. D.

M. W. D. Mansfield, N. J. Peacock, C. C. Smith, M. G. Hobby, and R. D. Cowan, “The XUV spectra of highly ionized molybdenum,” J. Phys. B 11, 1521–1544 (1978).
[Crossref]

P. G. Burkhalter, J. Reader, and R. D. Cowan, “Spectra of Mo xxx, xxxi, and xxxii from a laser-produced plasma,” J. Opt. Soc. Am. 67, 1521–1525 (1977).
[Crossref]

Doschek, G. A.

U. Feldman, G. A. Doschek, D. J. Nagel, W. E. Behring, and L. Cohen, “Transitions of Fe xviii and Fe xix observed in laser-produced plasmas,” Astrophys. J. 183, L43–L45 (1973).
[Crossref]

Ekberg, J. O.

Epstein, G. L.

Fawcett, B. C.

Feldman, U.

U. Feldman, G. A. Doschek, D. J. Nagel, W. E. Behring, and L. Cohen, “Transitions of Fe xviii and Fe xix observed in laser-produced plasmas,” Astrophys. J. 183, L43–L45 (1973).
[Crossref]

Finkenthal, M.

M. Finkenthal, E. Hinnov, S. Cohen, and S. Suckewer, “The 3s2 1S0–3s 3p3P1magnesium sequence intercombination lines from Sc x to Mo xxxi observed in the PLT tokamak,” Phys. Lett. A 91, 284 (1982).
[Crossref]

N. Schweitzer, M. Klapisch, J. L. Schwob, M. Finkenthal, A. Bar-Shalom, P. Mandelbaum, and B. S. Fraenkel, “Nickel-like spectra of elements Y xii to Ag xx from a vacuum spark,” J. Opt. Soc. Am. 71, 219–226 (1981).
[Crossref]

Fraenkel, B. S.

Hansen, J. E.

Hayes, R. W.

Hinnov, E.

M. Finkenthal, E. Hinnov, S. Cohen, and S. Suckewer, “The 3s2 1S0–3s 3p3P1magnesium sequence intercombination lines from Sc x to Mo xxxi observed in the PLT tokamak,” Phys. Lett. A 91, 284 (1982).
[Crossref]

E. Hinnov, “Highly ionized atoms in tokamak discharges,” Phys. Rev. A 14, 1533–1541 (1976).
[Crossref]

Hobby, M. G.

M. W. D. Mansfield, N. J. Peacock, C. C. Smith, M. G. Hobby, and R. D. Cowan, “The XUV spectra of highly ionized molybdenum,” J. Phys. B 11, 1521–1544 (1978).
[Crossref]

Johnson, W. R.

K. T. Cheng and W. R. Johnson, “Excitation energies and line strengths in the Mg isoelectronic sequence,” Phys. Rev. A 16, 263–272 (1977).
[Crossref]

P. Shorer, C. D. Lin, and W. R. Johnson, “Oscillator strengths for the magnesium isoelectronic sequence,” Phys. Rev. A 16, 1109–1116 (1977). Values for the ions Sr26+ to Rh33+ were communicated personally by the late P. Shorer.
[Crossref]

Kelly, R. L.

R. L. Kelly and L. J. Palumbo, Atomic and Ionic Emission Lines Below 2000 Angstroms, Hydrogen through Krypton, (U.S. Government Printing Office, Washington, D.C., 1973).

Klapisch, M.

N. Schweitzer, M. Klapisch, J. L. Schwob, M. Finkenthal, A. Bar-Shalom, P. Mandelbaum, and B. S. Fraenkel, “Nickel-like spectra of elements Y xii to Ag xx from a vacuum spark,” J. Opt. Soc. Am. 71, 219–226 (1981).
[Crossref]

M. Klapisch, R. Perel, and D. Weil, “Theoretical energy levels and wavelengths for some spectra of highly ionized molybdenum between Mo xl and Mo xxiv,” (1976).

Kononov, E. Ya.

E. Ya. Kononov, K. N. Koshelev, L. I. Podobedova, S. V. Chekalin, and S. S. Churilov, “Identification of the solar spectra of multi-charged iron ions on the basis of laboratory measurements,” J. Phys. B 9, 565–575 (1976).
[Crossref]

Koshelev, K. N.

E. Ya. Kononov, K. N. Koshelev, L. I. Podobedova, S. V. Chekalin, and S. S. Churilov, “Identification of the solar spectra of multi-charged iron ions on the basis of laboratory measurements,” J. Phys. B 9, 565–575 (1976).
[Crossref]

Lin, C. D.

P. Shorer, C. D. Lin, and W. R. Johnson, “Oscillator strengths for the magnesium isoelectronic sequence,” Phys. Rev. A 16, 1109–1116 (1977). Values for the ions Sr26+ to Rh33+ were communicated personally by the late P. Shorer.
[Crossref]

Luther, G.

Mandelbaum, P.

Mansfield, M. W. D.

M. W. D. Mansfield, N. J. Peacock, C. C. Smith, M. G. Hobby, and R. D. Cowan, “The XUV spectra of highly ionized molybdenum,” J. Phys. B 11, 1521–1544 (1978).
[Crossref]

Nagel, D. J.

U. Feldman, G. A. Doschek, D. J. Nagel, W. E. Behring, and L. Cohen, “Transitions of Fe xviii and Fe xix observed in laser-produced plasmas,” Astrophys. J. 183, L43–L45 (1973).
[Crossref]

Palumbo, L. J.

R. L. Kelly and L. J. Palumbo, Atomic and Ionic Emission Lines Below 2000 Angstroms, Hydrogen through Krypton, (U.S. Government Printing Office, Washington, D.C., 1973).

Peacock, N. J.

M. W. D. Mansfield, N. J. Peacock, C. C. Smith, M. G. Hobby, and R. D. Cowan, “The XUV spectra of highly ionized molybdenum,” J. Phys. B 11, 1521–1544 (1978).
[Crossref]

Perel, R.

M. Klapisch, R. Perel, and D. Weil, “Theoretical energy levels and wavelengths for some spectra of highly ionized molybdenum between Mo xl and Mo xxiv,” (1976).

Podobedova, L. I.

E. Ya. Kononov, K. N. Koshelev, L. I. Podobedova, S. V. Chekalin, and S. S. Churilov, “Identification of the solar spectra of multi-charged iron ions on the basis of laboratory measurements,” J. Phys. B 9, 565–575 (1976).
[Crossref]

Reader, J.

Ryabtsev, A.

Schweitzer, N.

Schwob, J. L.

Shorer, P.

P. Shorer, C. D. Lin, and W. R. Johnson, “Oscillator strengths for the magnesium isoelectronic sequence,” Phys. Rev. A 16, 1109–1116 (1977). Values for the ions Sr26+ to Rh33+ were communicated personally by the late P. Shorer.
[Crossref]

Smith, C. C.

M. W. D. Mansfield, N. J. Peacock, C. C. Smith, M. G. Hobby, and R. D. Cowan, “The XUV spectra of highly ionized molybdenum,” J. Phys. B 11, 1521–1544 (1978).
[Crossref]

Suckewer, S.

M. Finkenthal, E. Hinnov, S. Cohen, and S. Suckewer, “The 3s2 1S0–3s 3p3P1magnesium sequence intercombination lines from Sc x to Mo xxxi observed in the PLT tokamak,” Phys. Lett. A 91, 284 (1982).
[Crossref]

Weil, D.

M. Klapisch, R. Perel, and D. Weil, “Theoretical energy levels and wavelengths for some spectra of highly ionized molybdenum between Mo xl and Mo xxiv,” (1976).

Wyart, J. -F.

Astrophys. J. (1)

U. Feldman, G. A. Doschek, D. J. Nagel, W. E. Behring, and L. Cohen, “Transitions of Fe xviii and Fe xix observed in laser-produced plasmas,” Astrophys. J. 183, L43–L45 (1973).
[Crossref]

J. Opt. Soc. Am. (8)

P. G. Burkhalter, J. Reader, and R. D. Cowan, “Spectra of Mo xxx, xxxi, and xxxii from a laser-produced plasma,” J. Opt. Soc. Am. 67, 1521–1525 (1977).
[Crossref]

J. Reader, G. Luther, and N. Acquista, “Spectrum and energy levels of thirteen-times ionized molybdenum (Mo xiv),” J. Opt. Soc. Am. 69, 144–149 (1979).
[Crossref]

J. Reader, G. L. Epstein, and J. O. Ekberg, “Spectra of Rb ii, Sr iii, Y iv, Zr v, Nb vi, and Mo vii in the vacuum ultraviolet,” J. Opt. Soc. Am. 62, 273–284 (1972).
[Crossref]

J. O. Ekberg, J. E. Hansen, and J. Reader, “Analysis of the spectrum of seven-times-ionized molybdenum (Mo viii) and isoelectronic comparison of the spectra Y v–Mo viii,” J. Opt. Soc. Am. 62, 1143–1148 (1972).
[Crossref]

J. -F. Wyart, J. Reader, and A. Ryabtsev, “3d–4p transitions in the zinclike and copperlike ions Y x, xi; Zr xi, xii; Nb xii, xiii; and Mo xiii, xiv,” J. Opt. Soc. Am. 71, 692–698 (1981).
[Crossref]

N. Schweitzer, M. Klapisch, J. L. Schwob, M. Finkenthal, A. Bar-Shalom, P. Mandelbaum, and B. S. Fraenkel, “Nickel-like spectra of elements Y xii to Ag xx from a vacuum spark,” J. Opt. Soc. Am. 71, 219–226 (1981).
[Crossref]

N. Acquista and J. Reader, “Spectrum and energy levels of nine-times ionized strontium (Sr x),” J. Opt. Soc. Am. 71, 569–573 (1981).
[Crossref]

B. C. Fawcett and R. W. Hayes, “Spectra in the period between copper and bromine produced with the aid of a 4 GW laser,” J. Opt. Soc. Am. 65, 623–627 (1975).
[Crossref]

J. Phys. B (2)

M. W. D. Mansfield, N. J. Peacock, C. C. Smith, M. G. Hobby, and R. D. Cowan, “The XUV spectra of highly ionized molybdenum,” J. Phys. B 11, 1521–1544 (1978).
[Crossref]

E. Ya. Kononov, K. N. Koshelev, L. I. Podobedova, S. V. Chekalin, and S. S. Churilov, “Identification of the solar spectra of multi-charged iron ions on the basis of laboratory measurements,” J. Phys. B 9, 565–575 (1976).
[Crossref]

Phys. Lett. A (1)

M. Finkenthal, E. Hinnov, S. Cohen, and S. Suckewer, “The 3s2 1S0–3s 3p3P1magnesium sequence intercombination lines from Sc x to Mo xxxi observed in the PLT tokamak,” Phys. Lett. A 91, 284 (1982).
[Crossref]

Phys. Rev. A (3)

E. Hinnov, “Highly ionized atoms in tokamak discharges,” Phys. Rev. A 14, 1533–1541 (1976).
[Crossref]

K. T. Cheng and W. R. Johnson, “Excitation energies and line strengths in the Mg isoelectronic sequence,” Phys. Rev. A 16, 263–272 (1977).
[Crossref]

P. Shorer, C. D. Lin, and W. R. Johnson, “Oscillator strengths for the magnesium isoelectronic sequence,” Phys. Rev. A 16, 1109–1116 (1977). Values for the ions Sr26+ to Rh33+ were communicated personally by the late P. Shorer.
[Crossref]

Other (2)

M. Klapisch, R. Perel, and D. Weil, “Theoretical energy levels and wavelengths for some spectra of highly ionized molybdenum between Mo xl and Mo xxiv,” (1976).

R. L. Kelly and L. J. Palumbo, Atomic and Ionic Emission Lines Below 2000 Angstroms, Hydrogen through Krypton, (U.S. Government Printing Office, Washington, D.C., 1973).

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Figures (4)

Fig. 1
Fig. 1

Densitometer trace of the spectrum of highly ionized Sr in the region 125–160 Å. A, 3p2P1/2–3d2D3/2 of Sr27+; B, 3p2P3/2–3d2D5/2 of Sr27+; C, 3p2P3/2–3d2D3/2 of Sr27+; D, 3s2S1/2–3p2P3/2 of Sr27+; E, 3s3p3P2–3s3p 3D3 of Sr26+;F, 3s3p1P1–3s3d1D2 of Sr26+;G, 3s2 1S0–3s3p1P1 of Sr26+; H, 4s2S1/2–5p2P3/2 of Sr9+; I, 4s2S1/2–5p2P1/2 of Sr9+; a, 128.412 Å of O6+; b, 128.500 Å of O6+; c, blend of 150.089 and 150.124 of O5+.

Fig. 2
Fig. 2

Calculated low-energy levels of Mo30+ according to Klapisch et al.15 and transitions identified in present work. Letters designating transitions correspond to letters in Fig. 1. Levels of the 3s3d configuration are shown as dashed lines.

Fig. 3
Fig. 3

Isoelectronic comparison of wave numbers of 3s2 1S0–3s3p1P1, 3s3p1P1–3s3d1D2 and 3s3p3P2–3s3d3D3 transitions in the magnesium isoelectronic sequence. References: K7+, Ca8+, Sc9+, Ti10+: J. O. Ekberg, Phys. Scr. 4, 101 (1971); V11+: J. Sugar and C. Corliss, J. Phys. Chem. Ref. Data 7, 1191 (1978); Cr12+: J. Sugar and C. Corliss, J. Phys. Chem. Ref. Data 6, 317 (1977); Mn13+: C. Corliss and J. Sugar, J. Phys. Chem. Ref. Data 6, 1253 (1977); Fe14+: C. Corliss and J. Sugar, J. Phys. Chem. Ref. Data 11, 135 (1982); Co15+: J. Sugar and C. Corliss, J. Phys. Chem. Ref. Data 10, 1097 (1981); Ni16+: C. Corliss and J. Sugar, J. Phys. Chem. Ref. Data 10, 197 (1981); Cu18+ through Se22+: B. C. Fawcett and R. W. Hayes, J. Opt. Soc. Am. 65, 623 (1975).

Fig. 4
Fig. 4

Wave-number difference Δσ between observed values of 3s2 1S0–3s3p1P1 resonance line of Mg-like ions and values calculated by Shorer et al.14 Observed values for Mg–Ar6+ are from C. E. Moore, Atomic Energy Levels, Natl. Bur. Std. (U.S.) Circ. 467 (U.S. Government Printing Office, Washington, D.C., 1949), Vol. I. References for observed values of K7+ through Se22+ are given in Fig. 2.

Tables (4)

Tables Icon

Table 1 Observed Wavelengths and Intensities for Mg-like Ions from Sr26+ to Rh33+

Tables Icon

Table 2 Energy Levels (in cm−1) of Mg-like Ions from Sr26+ to Rh33+ Implied by Observed n = 3–3 Transitions

Tables Icon

Table 3 Comparison of Present Wavelengths for Mo30+ with Previous Values

Tables Icon

Table 4 Comparison of Present Wavelengths (in Å) for 3s2 1S0–3s3p1P1 Transitions for Mg-like Ions with Wavelengths Measured in Tokamaks