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)


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.


Heat Transfer Coefficient Liquid Surface Liquid Helium Evacuation System Interface Propagation 
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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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