Abstract

Using a grazing-incidence spectrometer and a low-inductance 14-μF, 12–15-kV spark source, we have observed spectra of Mg x, Al xi, and Si xii. About 50 new lines are reported between 25 and 65 Å, arising from transitions between the lowest 2s and 2p configurations and ns, np, and nd configurations, where n≥3.

© 1970 Optical Society of America

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References

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  1. J. Söderqvist, Arkiv Mat. Astron. Fysik 30A,(11), 1 (1948).
  2. E. Ferner, Arkiv Mat. Astron. Fysik 36A,(1), 25 (1948).
  3. E. Ferner, Arkiv Mat. Astron. Fysik 28A,(4), 21 (1942).
  4. G. Tondello, J. Phys. (London) B Ser. 2,  2, 727 (1969).
  5. C. Jordan, Comm. Univ. London Observatory No. 68 (1965).
  6. R. L. Kelly, Atomic Emission Lines Below 2000 Å, (U. S. Govt. Printing Office, Washington, D. C., 1968).
  7. U. Feldman, M. Swartz, and L. Cohen, Rev. Sci. Instr. 38, 1372 (1967).
    [Crossref]

1969 (1)

G. Tondello, J. Phys. (London) B Ser. 2,  2, 727 (1969).

1967 (1)

U. Feldman, M. Swartz, and L. Cohen, Rev. Sci. Instr. 38, 1372 (1967).
[Crossref]

1965 (1)

C. Jordan, Comm. Univ. London Observatory No. 68 (1965).

1948 (2)

J. Söderqvist, Arkiv Mat. Astron. Fysik 30A,(11), 1 (1948).

E. Ferner, Arkiv Mat. Astron. Fysik 36A,(1), 25 (1948).

1942 (1)

E. Ferner, Arkiv Mat. Astron. Fysik 28A,(4), 21 (1942).

Cohen, L.

U. Feldman, M. Swartz, and L. Cohen, Rev. Sci. Instr. 38, 1372 (1967).
[Crossref]

Feldman, U.

U. Feldman, M. Swartz, and L. Cohen, Rev. Sci. Instr. 38, 1372 (1967).
[Crossref]

Ferner, E.

E. Ferner, Arkiv Mat. Astron. Fysik 36A,(1), 25 (1948).

E. Ferner, Arkiv Mat. Astron. Fysik 28A,(4), 21 (1942).

Jordan, C.

C. Jordan, Comm. Univ. London Observatory No. 68 (1965).

Kelly, R. L.

R. L. Kelly, Atomic Emission Lines Below 2000 Å, (U. S. Govt. Printing Office, Washington, D. C., 1968).

Söderqvist, J.

J. Söderqvist, Arkiv Mat. Astron. Fysik 30A,(11), 1 (1948).

Swartz, M.

U. Feldman, M. Swartz, and L. Cohen, Rev. Sci. Instr. 38, 1372 (1967).
[Crossref]

Tondello, G.

G. Tondello, J. Phys. (London) B Ser. 2,  2, 727 (1969).

Arkiv Mat. Astron. Fysik (3)

J. Söderqvist, Arkiv Mat. Astron. Fysik 30A,(11), 1 (1948).

E. Ferner, Arkiv Mat. Astron. Fysik 36A,(1), 25 (1948).

E. Ferner, Arkiv Mat. Astron. Fysik 28A,(4), 21 (1942).

Comm. Univ. London Observatory No. 68 (1)

C. Jordan, Comm. Univ. London Observatory No. 68 (1965).

J. Phys. (London) B Ser. 2 (1)

G. Tondello, J. Phys. (London) B Ser. 2,  2, 727 (1969).

Rev. Sci. Instr. (1)

U. Feldman, M. Swartz, and L. Cohen, Rev. Sci. Instr. 38, 1372 (1967).
[Crossref]

Other (1)

R. L. Kelly, Atomic Emission Lines Below 2000 Å, (U. S. Govt. Printing Office, Washington, D. C., 1968).

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Figures (1)

Fig. 1
Fig. 1

Lithium-like spectra of Si.

Tables (2)

Tables Icon

Table I Classification of lithium-like spectra in Mg, Al, and Si.

Tables Icon

Table II Energy levels of lithium-like spectra in Mg, Al, and Si.