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Parametric studies on convection during the physical vapor transport of mercurous chloride (Hg2Cl2)

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2004, 14(6), pp.281-289
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : November 22, 2004
  • Accepted : December 2, 2004

Geug Tae Kim 1 Kyong-Hwan Lee 2

1한남대학교
2한국에너지기술연구소

Accredited

ABSTRACT

The temperature hump is found to be most efficient in suppressing parasitic nucleation. With the temperature humps, there are found to be observed in undersaturations along the transport path for convective-diffusive processes ranging from DAB = 0.0584 cm2/s to 0.584 cm2/s, axial positions from 0 to 7.5 cm. With decreasing Ar = 5 to 3.5, the temperature difference is increased because of the imposed nonlinear temperature profile but the rate is decreased. For 2 Ar 3.5, the rate is increased with the aspect ratio as well as the temperature difference. Such an occurrence of a critical aspect ratio is likely to be due to the effect of sidewall and much small temperature difference. The rate is decreased exponentially with the aspect ratio for 2 Ar 10. Also, the rate is exponentially decreased with partial pressure of component B, PB for 1 PB 100 Torr.

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