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Optical observation of thermal disturbance and quench occurring in immersion-cooled superconductors in liquid helium.

[In Japanese. / En japonais.]

Author(s) : AIHARA T., OKADA S., YAMAMOTO H., KOMURA A.

Type of article: Article

Summary

Fundamental study based on experiments using a pulse-heated strip of stainless steel film revealed the following: the optical observation is possible when the wall heat flux of the test piece is greater than 140 watts/m2 and its wall superheat is greater than 0.3 K. In such a case, a light beam is scatttered in a very thin thermal layer at the liquid-solid interface and luminous energy of reflected light from the interface is attenuated. With increasing pulse-heat flux, the reflected luminous energy decreases drastically and initiation time of the attenuation is shortened.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1995-3398
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 29 - n. 7
  • Publication date: 1994
  • Document available for consultation in the library of the IIR headquarters only.

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