Letter | Published:

An Infra-Red Band-System of Calcium Oxide

Nature volume 166, pages 190191 (29 July 1950) | Download Citation

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Abstract

THE introduction of calcium salts into flames or arcs gives, in the presence of oxygen, a very complicated band-spectrum from the near ultra-violet up to the infra-red. The spectrum contains several systems, most of which can be attributed to CaO. The analyses hitherto performed—both vibrational and rotational—do not, however, appear entirely trustworthy. Brodersen1,2 has given, in two papers, rotational analyses of some infra-red and blue bands. He has also tried unconvincingly to arrange several band-systems into an energy-level scheme. This scheme seems to us to be very artificial.

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References

  1. 1.

    , Z. Phys., 79, 613 (1932).

  2. 2.

    , Z. Phys., 104, 135 (1936).

  3. 3.

    , U.S. Bur. Stand. J. Res., 10, 669 (1933).

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Author information

Affiliations

  1. Physics Department, University, Stockholm. March 9.

    • MATS HULTIN
    •  & ALBIN LAGERQVIST

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DOI

https://doi.org/10.1038/166190a0

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