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ISSN Online: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Quantum nucleation of bubbles in liquid helium near the absolute zero temperature

Get access (open in a dialog) DOI: 10.1615/IHTC12.4090
6 pages

Resumo

As the temperature of liquid under negative pressure approaches the absolute zero, the nucleation process due to thermal fluctuations hardly occurs. Instead of this thermal motion, quantum fluctuations may lead the formation of nucleus for new phase in metastable state. In this study, the thermal as well as quantum nucleation of bubbles and the cross-over temperature from the thermal to the quantum regime in liquid helium under negative pressure was investigated theoretically. The energy barrier against nucleation was estimated by molecular interaction due to the London' dispersion force. It is shown that the phase transition from liquid to vapor is only possible due to the quantum tunneling below 0.25 K for helium-4 and 0.175 K for helium-3.