Abstract

A number of VUV lines, produced in a theta-pinch plasma, have been identified in the triplet system of Cd-like Xe vii. They serve to establish the positions of all the 5s5p3P0, 5p2 3P, 5s6s3S, and 5s5d3D levels. An ionization energy of 743 000 ± 6000 cm 1 (92.1 ± 0.8 eV) is derived from these observations.

© 1979 Optical Society of America

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References

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  1. B. C. Fawcett, B. B. Jones, and R. Wilson, “Vacuum Ultra-Violet Spectra of Multiply Ionized Inert Gases,” Proc. Phys. Soc. 78, 1223–1226 (1962).
    [Crossref]
  2. W. L. Rowan and J. R. Roberts, “Electron impact ionization rate coefficients for lithium-like nitrogen and oxygen,” Phys. Rev. A 19, 90–98 (1979).
    [Crossref]
  3. R. L. Kelly and L. J. Palumbo, “Atomic and Ionic Emission Lines Below 2000 Ångstroms—Hydrogen through Krypton,” (NRL Report No. 7599, U.S. GPO, Washington, D.C., 1973).
  4. C. E. Moore, “Selected Tables of Atomic Spectra, Atomic Energy Levels and Multiplet Tables—0 vi, 0 vii, 0 viii,” (Natl. Stand. Ref. Data Ser.-Natl. Bur. Stand. 3, Section 8, U.S. GPO, Washington, D.C., 1979).
  5. J. Sugar, “Ionization energies of the neutral actinides,” J. Chem. Phys. 59, 788–791 (1973).
    [Crossref]

1979 (1)

W. L. Rowan and J. R. Roberts, “Electron impact ionization rate coefficients for lithium-like nitrogen and oxygen,” Phys. Rev. A 19, 90–98 (1979).
[Crossref]

1973 (1)

J. Sugar, “Ionization energies of the neutral actinides,” J. Chem. Phys. 59, 788–791 (1973).
[Crossref]

1962 (1)

B. C. Fawcett, B. B. Jones, and R. Wilson, “Vacuum Ultra-Violet Spectra of Multiply Ionized Inert Gases,” Proc. Phys. Soc. 78, 1223–1226 (1962).
[Crossref]

Fawcett, B. C.

B. C. Fawcett, B. B. Jones, and R. Wilson, “Vacuum Ultra-Violet Spectra of Multiply Ionized Inert Gases,” Proc. Phys. Soc. 78, 1223–1226 (1962).
[Crossref]

Jones, B. B.

B. C. Fawcett, B. B. Jones, and R. Wilson, “Vacuum Ultra-Violet Spectra of Multiply Ionized Inert Gases,” Proc. Phys. Soc. 78, 1223–1226 (1962).
[Crossref]

Kelly, R. L.

R. L. Kelly and L. J. Palumbo, “Atomic and Ionic Emission Lines Below 2000 Ångstroms—Hydrogen through Krypton,” (NRL Report No. 7599, U.S. GPO, Washington, D.C., 1973).

Moore, C. E.

C. E. Moore, “Selected Tables of Atomic Spectra, Atomic Energy Levels and Multiplet Tables—0 vi, 0 vii, 0 viii,” (Natl. Stand. Ref. Data Ser.-Natl. Bur. Stand. 3, Section 8, U.S. GPO, Washington, D.C., 1979).

Palumbo, L. J.

R. L. Kelly and L. J. Palumbo, “Atomic and Ionic Emission Lines Below 2000 Ångstroms—Hydrogen through Krypton,” (NRL Report No. 7599, U.S. GPO, Washington, D.C., 1973).

Roberts, J. R.

W. L. Rowan and J. R. Roberts, “Electron impact ionization rate coefficients for lithium-like nitrogen and oxygen,” Phys. Rev. A 19, 90–98 (1979).
[Crossref]

Rowan, W. L.

W. L. Rowan and J. R. Roberts, “Electron impact ionization rate coefficients for lithium-like nitrogen and oxygen,” Phys. Rev. A 19, 90–98 (1979).
[Crossref]

Sugar, J.

J. Sugar, “Ionization energies of the neutral actinides,” J. Chem. Phys. 59, 788–791 (1973).
[Crossref]

Wilson, R.

B. C. Fawcett, B. B. Jones, and R. Wilson, “Vacuum Ultra-Violet Spectra of Multiply Ionized Inert Gases,” Proc. Phys. Soc. 78, 1223–1226 (1962).
[Crossref]

J. Chem. Phys. (1)

J. Sugar, “Ionization energies of the neutral actinides,” J. Chem. Phys. 59, 788–791 (1973).
[Crossref]

Phys. Rev. A (1)

W. L. Rowan and J. R. Roberts, “Electron impact ionization rate coefficients for lithium-like nitrogen and oxygen,” Phys. Rev. A 19, 90–98 (1979).
[Crossref]

Proc. Phys. Soc. (1)

B. C. Fawcett, B. B. Jones, and R. Wilson, “Vacuum Ultra-Violet Spectra of Multiply Ionized Inert Gases,” Proc. Phys. Soc. 78, 1223–1226 (1962).
[Crossref]

Other (2)

R. L. Kelly and L. J. Palumbo, “Atomic and Ionic Emission Lines Below 2000 Ångstroms—Hydrogen through Krypton,” (NRL Report No. 7599, U.S. GPO, Washington, D.C., 1973).

C. E. Moore, “Selected Tables of Atomic Spectra, Atomic Energy Levels and Multiplet Tables—0 vi, 0 vii, 0 viii,” (Natl. Stand. Ref. Data Ser.-Natl. Bur. Stand. 3, Section 8, U.S. GPO, Washington, D.C., 1979).

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Tables (2)

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TABLE I Classified lines of Xe vii. Wavelength accuracy is estimated to be ±0.03 Å.

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TABLE II Energy levels of Xe vii derived from our measurements given in Table I. The value 100 450 cm−1 for 5s5p3P1 is derived from the measurement of Fawcett et al. (Ref. 1).

Equations (1)

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Δ T = R ζ 2 ( 1 n * ( 5 s 2 ) 2 1 [ n * ( 5 s 2 ) + Δ n * ] 2 )