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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 71, Iss. 4 — Apr. 1, 1981
  • pp: 393–396

Thermal-emission spectra of coagulated small MgO crystals

On Matumura and Masanori Cho  »View Author Affiliations


JOSA, Vol. 71, Issue 4, pp. 393-396 (1981)
http://dx.doi.org/10.1364/JOSA.71.000393


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Abstract

The thermal-emission spectra of small MgO cubes (about 0.1 µm) were measured in the frequency region of their surface phonon modes. From the partial derivative of emissivity with respect to particle density, the emissivity of an MgO coagulation has been determined as a function of frequency. With an assumption of spherical coagulation, it is concluded that the dielectric function of small MgO particles and its temperature dependence are nearly the same as those of a bulk crystal.

© 1981 Optical Society of America

Citation
On Matumura and Masanori Cho, "Thermal-emission spectra of coagulated small MgO crystals," J. Opt. Soc. Am. 71, 393-396 (1981)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-71-4-393


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References

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  12. The factor 2 appears because the definition of blackbody emissive power is the energy radiated within a solid angle of 27π sr, whereas the definition of volume emissive power is the energy radiated for 47π sr.

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