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The normal spectral emittance of erbium, dysprosium and samarium above 1000 K

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Abstract

An apparatus for measuring the normal spectral emittance (λ = 0.645 μ.) of metals with very high vapor pressures has been designed and used for erbium, dysprosium and samarium at temperatures above 1000 K. The samples are maintained in an argon atmosphere at a pressure slightly above atmospheric pressure. The measured normal spectral emittances are: Erbium, (solid), ∈ nλ = 0.372 ± 0.011; (liquid), ∈ nλ = 0.372 ± 0.011; Dysprosium, (solid), ∈ nλ = 0.631 – 1.889 × 10–4 T (deg K); (liquid), ∈ nλ = 0.297 ± 0.088; Samarium, (solid), ∈ nλ = 0.437 ± 0.030; (liquid, estimated), ∈ nλ = 0.437 ± 0.03.

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Authors and Affiliations

  1. Department of Chemical Engineering, MIT, 02139, Cambridge, MA

    Terry S. King (Graduate Fellow)

  2. Department of Chemical Engineering, University of North Dakota, 58201, Grand Forks, ND

    Dorab N. Baria (Assistant Professor)

  3. Department of Chemical Engineering and Nuclear Engineering, and Group Leader, Ames Laboratory, ERDA, Iowa State University, 50011, Ames, IA

    Renato G. Bautista (member AIME, Associate professor)

Authors
  1. Terry S. King
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  2. Dorab N. Baria
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  3. Renato G. Bautista
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Additional information

TERRY S. KING, formerly Undergraduate Research Helper.

DORAB N. BARIA, formerly NSF Presidential Intern and Post-Doctoral Fellow.

Prepared for the Energy Research and Development Administration under Contract No. W-7405-eng-82.

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King, T.S., Baria, D.N. & Bautista, R.G. The normal spectral emittance of erbium, dysprosium and samarium above 1000 K. Metall Trans B 7, 411–415 (1976). https://doi.org/10.1007/BF02652712

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  • DOI: https://doi.org/10.1007/BF02652712

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