The Ultraviolet Spectrum of the Sun from V-2 Rockets

John J. Hopfield; Harold E. Clearman, Jr

doi:10.1103/PhysRev.73.877

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The Ultraviolet Spectrum of the Sun from V-2 Rockets

John J. Hopfield and Harold E. Clearman, Jr.

Applied Physics Laboratory, Johns Hopkins University, Silver Spring, Maryland

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Phys. Rev. 73, 877 – Published 15 April, 1948

DOI: https://doi.org/10.1103/PhysRev.73.877

Abstract

Spectra of the sun have been obtained from V-2 rockets at heights up to 155 km. A grating spectrograph was used giving a dispersion of 34A/mm. The ultraviolet spectrum of the sun obtained extends down to $λ = 2300$ A, and traces are evident as far as $λ = 2230$ A. A tentative list of identified lines is given. The MgII resonance doublet at $λ = 2800$ A is observed to have emission centers in both absorption components. The intensity of this emission is estimated as about 10 percent that of the adjacent continuum.

References (4)

L. W. Fraser, R. P. Petersen, H. E. Tatel, and J. A. Van Allen, Phys. Rev. 72, 173 (1947)
J. J. Hopfield, "U.V. absorption of air," Astrophys. J. 104, 208 (1946)
W. A. Baum, F. S. Johnson, J. J. Oberly, C. C. Rockwood, C. V. Strain, and R. Tausey, Phys. Rev. 70, 781 (1946)
E. Durand, J. J. Oberly, and R. Tausey, Phys. Rev. 71, 827 (1947)

[c1] L. W. Fraser, R. P. Petersen, H. E. Tatel, and J. A. Van Allen, Phys. Rev. 72, 173 (1947)

[c2] J. J. Hopfield, "U.V. absorption of air," Astrophys. J. 104, 208 (1946)

[c3] W. A. Baum, F. S. Johnson, J. J. Oberly, C. C. Rockwood, C. V. Strain, and R. Tausey, Phys. Rev. 70, 781 (1946)

[c4] E. Durand, J. J. Oberly, and R. Tausey, Phys. Rev. 71, 827 (1947)

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The Ultraviolet Spectrum of the Sun from V-2 Rockets

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