Experimental Study for Dynamical Characteristics of He I–He II Interface Under Saturated Vapor Pressure Condition

  • K. Kamiya
  • M. Murakami
  • N. Yanase
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

We investigated appearance and propagation characteristics of He I-He II interface caused by cooling of He I. When liquid helium is cooled or heated near λ-point in a homogeneous situation, a He I-He II transition may occur without well-defined interface between the two phases. On the contrary, in such inhomogeneous situation as in the gravitational field or under a heat flow, bulk liquid helium system can not pass the λ-line as a whole at once and instead, a He I-He II interface appears. We generated He I-He II interface by imposing a cooling heat flow and measured the temperature field by a newly developed superconductive temperature sensor. We revealed some dynamical characteristics of He I-He II interface.

Keywords

Heat Transfer Coefficient Liquid Surface Liquid Helium Evacuation System Interface Propagation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • K. Kamiya
    • 1
  • M. Murakami
    • 1
  • N. Yanase
    • 1
  1. 1.Institute of Engineering MechanicsUniversity of TsukubaIbaraki, Tsukuba 305Japan

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