Liquid helium at negative pressures: Nucleation of bubbles and anomalous phonon dispersion

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Journal of Low Temperature Physics; (USA)

DOI:https://doi.org/10.1007/BF00682750· OSTI ID:6397302

Xiong, Quan ^[1]; Maris, H J ^[2]

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1. Brown Univ., Providence, RI (USA)
2. Brown Univ., Providence, RI (USA) Univ. of Stuttgart (West Germany)

The authors calculate the rate at which bubbles nucleate in {sup 4}He when the liquid is at negative pressure. Previous calculations have predicted that at low temperatures (T {le} 0.3 K) the nucleation rate remains low until a pressure of roughly {minus}15 bar is reached. They show that this result is incorrect, and that at a critical pressure P{sub c} ({approx equal} {minus}9 bar) the liquid becomes macroscopically unstable. They have made a calculation of the nucleation rate allowing for this effect. It is shown that the effect of quantum nucleation is small and probably hard to observe experimentally. Finally, the authors demonstrate that one can understand the pressure dependence of the phonon dispersion relation by a simple model. This model uses a parameter which also enters into the nucleation calculations.

• OSTI ID: 6397302
• Journal Information: Journal of Low Temperature Physics; (USA), Journal Name: Journal of Low Temperature Physics; (USA) Vol. 77:5-6; ISSN 0022-2291; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BUBBLE GROWTH
BUBBLES
CRITICAL PRESSURE
DISPERSION RELATIONS
ENERGY
EQUATIONS
EQUATIONS OF STATE
EVEN-EVEN NUCLEI
FLUCTUATIONS
FREE ENERGY
HELIUM 4
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
LOW PRESSURE
MATHEMATICAL MODELS
MECHANICS
NUCLEATION
NUCLEI
PADE APPROXIMATION
PHONONS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
QUANTUM MECHANICS
QUASI PARTICLES
SCATTERING
STABLE ISOTOPES
SURFACE ENERGY
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THERMODYNAMICS
ULTRALOW TEMPERATURE
VARIATIONS