Abstract

The TEXT tokamak was used to obtain spectra of highly ionized Er, Yb, Hf, W, and Pt. Injection of these elements into the plasma was achieved by laser ablation of thin films of metal deposited on glass slides and mounted at the inner wall of the vessel. The spectra were photographed with a 2.2-m grazing-incidence spectrograph set at a grazing angle of 4°. These spectra occur in a very small wavelength interval, for example, ~2 Å at 50 Å in W In this spectral range we previously classified lines of the Ag and Pd isoelectronic sequences. We have now classified lines of the Rh isoelectronic sequence 4d9–4d84f, which accounts for the remaining strong lines in this dense but well-resolved group. No lines of this array have previously been identified. They were classified by comparison of observed and calculated transition energies along the isoelectronic sequence.

© 1993 Optical Society of America

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References

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  1. V. Kaufman, J. Sugar, “Ag i isoelectronic sequence: wavelengths and energy levels for Ivii through La xi,” Phys. Scr. 24, 738 (1981); J. Sugar, V. Kaufman, “Ag i isoelectronic sequence: wavelengths and energy levels for Ce xii through Ho xxi and for W xxviii,” Phys. Scr. 24, 742 (1981).
    [CrossRef]
  2. J. Sugar, V. Kaufman, “Resonance lines in the Pd i isoelectronic sequence: Iviii to Ho xxii,” Phys. Scr. 26, 429 (1982).
  3. J. Sugar, V. Kaufman, W. L. Rowan, “Spectra of Ag i isoelectronic sequence observed from Er21+to au32+,” J. Opt. Soc. am. B 10, 1321 (1993).
    [CrossRef]
  4. J. Sugar, V. Kaufman, W. L. Rowan, “Observation of Pd-like resonance lines through Pt32+and Zn-like resonance lines of Er38+and Hf42+,” J. Opt. Soc. Am. B 10, 799 (1993).
    [CrossRef]
  5. R. C. Isler, R. V. Neidigh, R. D. Cowan, “Tungsten radiation from tokamak-produced plasmas,” Phys. Lett. 63A, 295 (1977).
  6. N. J. Peacock, M. F. Stamp, J. D. Silver, “Highly-ionized atoms in fusion research plasmas,” Phys. Scr. T8, 10 (1984).
    [CrossRef]
  7. W. E. Behring, L. Cohen, U. Feldman, G. Doschek, “The solar spectrum: wavelengths and identifications from 160 to 770 angstroms,” Astrophys. J. 203, 521 (1976).
    [CrossRef]
  8. B. Edlén, B. Löfstrand, “The term system of C v,” J. Phys. B 3, 1380 (1970).
    [CrossRef]
  9. R. D. Cowan, The Theory of Atomic Structure and Atomic Spectra (U. California Press, Berkeley, Calif., 1981).
  10. P. Mandelbaum, M. Finkenthal, J. L. Schwob, M. Klapisch, “Interpretation of the quasicontinuum band emitted by highly ionized rare-earth elements in the 70–100 Å range,” Phys. Rev. A 35, 5051 (1987).
    [CrossRef] [PubMed]
  11. E. Hinnov, M. Mattioli, “Observations of multiply ionized tungsten radiation in the PLT discharges,” Phys. Lett. 66A, 109 (1980).

1993 (2)

1987 (1)

P. Mandelbaum, M. Finkenthal, J. L. Schwob, M. Klapisch, “Interpretation of the quasicontinuum band emitted by highly ionized rare-earth elements in the 70–100 Å range,” Phys. Rev. A 35, 5051 (1987).
[CrossRef] [PubMed]

1984 (1)

N. J. Peacock, M. F. Stamp, J. D. Silver, “Highly-ionized atoms in fusion research plasmas,” Phys. Scr. T8, 10 (1984).
[CrossRef]

1982 (1)

J. Sugar, V. Kaufman, “Resonance lines in the Pd i isoelectronic sequence: Iviii to Ho xxii,” Phys. Scr. 26, 429 (1982).

1981 (1)

V. Kaufman, J. Sugar, “Ag i isoelectronic sequence: wavelengths and energy levels for Ivii through La xi,” Phys. Scr. 24, 738 (1981); J. Sugar, V. Kaufman, “Ag i isoelectronic sequence: wavelengths and energy levels for Ce xii through Ho xxi and for W xxviii,” Phys. Scr. 24, 742 (1981).
[CrossRef]

1980 (1)

E. Hinnov, M. Mattioli, “Observations of multiply ionized tungsten radiation in the PLT discharges,” Phys. Lett. 66A, 109 (1980).

1977 (1)

R. C. Isler, R. V. Neidigh, R. D. Cowan, “Tungsten radiation from tokamak-produced plasmas,” Phys. Lett. 63A, 295 (1977).

1976 (1)

W. E. Behring, L. Cohen, U. Feldman, G. Doschek, “The solar spectrum: wavelengths and identifications from 160 to 770 angstroms,” Astrophys. J. 203, 521 (1976).
[CrossRef]

1970 (1)

B. Edlén, B. Löfstrand, “The term system of C v,” J. Phys. B 3, 1380 (1970).
[CrossRef]

Behring, W. E.

W. E. Behring, L. Cohen, U. Feldman, G. Doschek, “The solar spectrum: wavelengths and identifications from 160 to 770 angstroms,” Astrophys. J. 203, 521 (1976).
[CrossRef]

Cohen, L.

W. E. Behring, L. Cohen, U. Feldman, G. Doschek, “The solar spectrum: wavelengths and identifications from 160 to 770 angstroms,” Astrophys. J. 203, 521 (1976).
[CrossRef]

Cowan, R. D.

R. C. Isler, R. V. Neidigh, R. D. Cowan, “Tungsten radiation from tokamak-produced plasmas,” Phys. Lett. 63A, 295 (1977).

R. D. Cowan, The Theory of Atomic Structure and Atomic Spectra (U. California Press, Berkeley, Calif., 1981).

Doschek, G.

W. E. Behring, L. Cohen, U. Feldman, G. Doschek, “The solar spectrum: wavelengths and identifications from 160 to 770 angstroms,” Astrophys. J. 203, 521 (1976).
[CrossRef]

Edlén, B.

B. Edlén, B. Löfstrand, “The term system of C v,” J. Phys. B 3, 1380 (1970).
[CrossRef]

Feldman, U.

W. E. Behring, L. Cohen, U. Feldman, G. Doschek, “The solar spectrum: wavelengths and identifications from 160 to 770 angstroms,” Astrophys. J. 203, 521 (1976).
[CrossRef]

Finkenthal, M.

P. Mandelbaum, M. Finkenthal, J. L. Schwob, M. Klapisch, “Interpretation of the quasicontinuum band emitted by highly ionized rare-earth elements in the 70–100 Å range,” Phys. Rev. A 35, 5051 (1987).
[CrossRef] [PubMed]

Hinnov, E.

E. Hinnov, M. Mattioli, “Observations of multiply ionized tungsten radiation in the PLT discharges,” Phys. Lett. 66A, 109 (1980).

Isler, R. C.

R. C. Isler, R. V. Neidigh, R. D. Cowan, “Tungsten radiation from tokamak-produced plasmas,” Phys. Lett. 63A, 295 (1977).

Kaufman, V.

J. Sugar, V. Kaufman, W. L. Rowan, “Spectra of Ag i isoelectronic sequence observed from Er21+to au32+,” J. Opt. Soc. am. B 10, 1321 (1993).
[CrossRef]

J. Sugar, V. Kaufman, W. L. Rowan, “Observation of Pd-like resonance lines through Pt32+and Zn-like resonance lines of Er38+and Hf42+,” J. Opt. Soc. Am. B 10, 799 (1993).
[CrossRef]

J. Sugar, V. Kaufman, “Resonance lines in the Pd i isoelectronic sequence: Iviii to Ho xxii,” Phys. Scr. 26, 429 (1982).

V. Kaufman, J. Sugar, “Ag i isoelectronic sequence: wavelengths and energy levels for Ivii through La xi,” Phys. Scr. 24, 738 (1981); J. Sugar, V. Kaufman, “Ag i isoelectronic sequence: wavelengths and energy levels for Ce xii through Ho xxi and for W xxviii,” Phys. Scr. 24, 742 (1981).
[CrossRef]

Klapisch, M.

P. Mandelbaum, M. Finkenthal, J. L. Schwob, M. Klapisch, “Interpretation of the quasicontinuum band emitted by highly ionized rare-earth elements in the 70–100 Å range,” Phys. Rev. A 35, 5051 (1987).
[CrossRef] [PubMed]

Löfstrand, B.

B. Edlén, B. Löfstrand, “The term system of C v,” J. Phys. B 3, 1380 (1970).
[CrossRef]

Mandelbaum, P.

P. Mandelbaum, M. Finkenthal, J. L. Schwob, M. Klapisch, “Interpretation of the quasicontinuum band emitted by highly ionized rare-earth elements in the 70–100 Å range,” Phys. Rev. A 35, 5051 (1987).
[CrossRef] [PubMed]

Mattioli, M.

E. Hinnov, M. Mattioli, “Observations of multiply ionized tungsten radiation in the PLT discharges,” Phys. Lett. 66A, 109 (1980).

Neidigh, R. V.

R. C. Isler, R. V. Neidigh, R. D. Cowan, “Tungsten radiation from tokamak-produced plasmas,” Phys. Lett. 63A, 295 (1977).

Peacock, N. J.

N. J. Peacock, M. F. Stamp, J. D. Silver, “Highly-ionized atoms in fusion research plasmas,” Phys. Scr. T8, 10 (1984).
[CrossRef]

Rowan, W. L.

Schwob, J. L.

P. Mandelbaum, M. Finkenthal, J. L. Schwob, M. Klapisch, “Interpretation of the quasicontinuum band emitted by highly ionized rare-earth elements in the 70–100 Å range,” Phys. Rev. A 35, 5051 (1987).
[CrossRef] [PubMed]

Silver, J. D.

N. J. Peacock, M. F. Stamp, J. D. Silver, “Highly-ionized atoms in fusion research plasmas,” Phys. Scr. T8, 10 (1984).
[CrossRef]

Stamp, M. F.

N. J. Peacock, M. F. Stamp, J. D. Silver, “Highly-ionized atoms in fusion research plasmas,” Phys. Scr. T8, 10 (1984).
[CrossRef]

Sugar, J.

J. Sugar, V. Kaufman, W. L. Rowan, “Observation of Pd-like resonance lines through Pt32+and Zn-like resonance lines of Er38+and Hf42+,” J. Opt. Soc. Am. B 10, 799 (1993).
[CrossRef]

J. Sugar, V. Kaufman, W. L. Rowan, “Spectra of Ag i isoelectronic sequence observed from Er21+to au32+,” J. Opt. Soc. am. B 10, 1321 (1993).
[CrossRef]

J. Sugar, V. Kaufman, “Resonance lines in the Pd i isoelectronic sequence: Iviii to Ho xxii,” Phys. Scr. 26, 429 (1982).

V. Kaufman, J. Sugar, “Ag i isoelectronic sequence: wavelengths and energy levels for Ivii through La xi,” Phys. Scr. 24, 738 (1981); J. Sugar, V. Kaufman, “Ag i isoelectronic sequence: wavelengths and energy levels for Ce xii through Ho xxi and for W xxviii,” Phys. Scr. 24, 742 (1981).
[CrossRef]

Astrophys. J. (1)

W. E. Behring, L. Cohen, U. Feldman, G. Doschek, “The solar spectrum: wavelengths and identifications from 160 to 770 angstroms,” Astrophys. J. 203, 521 (1976).
[CrossRef]

J. Opt. Soc. am. B (1)

J. Phys. B (1)

B. Edlén, B. Löfstrand, “The term system of C v,” J. Phys. B 3, 1380 (1970).
[CrossRef]

Phys. Lett. (2)

R. C. Isler, R. V. Neidigh, R. D. Cowan, “Tungsten radiation from tokamak-produced plasmas,” Phys. Lett. 63A, 295 (1977).

E. Hinnov, M. Mattioli, “Observations of multiply ionized tungsten radiation in the PLT discharges,” Phys. Lett. 66A, 109 (1980).

Phys. Rev. A (1)

P. Mandelbaum, M. Finkenthal, J. L. Schwob, M. Klapisch, “Interpretation of the quasicontinuum band emitted by highly ionized rare-earth elements in the 70–100 Å range,” Phys. Rev. A 35, 5051 (1987).
[CrossRef] [PubMed]

Phys. Scr. (3)

N. J. Peacock, M. F. Stamp, J. D. Silver, “Highly-ionized atoms in fusion research plasmas,” Phys. Scr. T8, 10 (1984).
[CrossRef]

V. Kaufman, J. Sugar, “Ag i isoelectronic sequence: wavelengths and energy levels for Ivii through La xi,” Phys. Scr. 24, 738 (1981); J. Sugar, V. Kaufman, “Ag i isoelectronic sequence: wavelengths and energy levels for Ce xii through Ho xxi and for W xxviii,” Phys. Scr. 24, 742 (1981).
[CrossRef]

J. Sugar, V. Kaufman, “Resonance lines in the Pd i isoelectronic sequence: Iviii to Ho xxii,” Phys. Scr. 26, 429 (1982).

Other (1)

R. D. Cowan, The Theory of Atomic Structure and Atomic Spectra (U. California Press, Berkeley, Calif., 1981).

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Figures (1)

Fig. 1
Fig. 1

Spectrum of W, showing classified lines of Ag-like, Pd-like, and Rh-like ions (W27+, W28+, and W29+).

Tables (2)

Tables Icon

Table 1 Observed, Calculated,a and Predictedb Wavelengths (Å) for the Transitions 4d9 2D–4d8(3F)4f2F in Rh-like Spectra

Tables Icon

Table 2 Observed, Calculated,a and Predictedb Wavelengths (Å) for the Transitions 4d9 2D–4d84f2P and 2D in Rh-like Spectra

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