Interactive Properties of Liquid Helium (4He) at Saturated Vapour Pressure
Values obtained as described by:
Russell J. Donnelly, and Carlo F. BarenghiThe Observed Properties of Liquid Helium
at the Saturated Vapor Pressure
Volume 27, 1217-1274, Nov 1998
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Total Density
Superfluid Density
First Sound Speed
Second Sound Speed
Heat Capacity
Mutual Friction
Viscosity
Dispersion Curve
Thermal Conductivity
Saturated Vapour Pressure
Normal Fluid Density
Entropy
Contacts
Select a property from the drop list
Useful constants:
- Mass of a Helium atom:
- mHe = 6.65 x 10-27 kg
- Quantum Circulation:
- κ = 9.97 x 10-8 m2 s-1
- Lambda Point:
- Tλ = 2.1768 K
Enter temperature T for density ρ value.
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Temperature:
(0 ≤ T ≤ 4.9 K)
Enter temperature T for density ρ value:
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (0 ≤ T ≤ 4.9 K)T2:
N: (1 < N ≤ 10,000)
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Enter temperature T for superfluid density ρs value:
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Temperature:
(0 ≤ T ≤ Tλ K)
Enter temperature T for superfluid density ρs value:
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (0 ≤ T ≤ Tλ K)T2:
N: (1 < N ≤ 10,000)
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Enter temperature T for first sound speed u1 value
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Temperature:
(0 ≤ T ≤ 4.2 K)
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (0 ≤ T ≤ 4.2 K)T2:
N: (1 < N ≤ 10,000)
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Enter temperature T for second sound speed u2 value:
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Temperature:
(0.6 ≤ T ≤ Tλ K)
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (0.6 ≤ T ≤ Tλ K)T2:
N: (1 < N ≤ 10,000)
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Enter temperature T for heat capacity Cs value:
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Temperature:
(0 ≤ T < Tλ or Tλ < T ≤ 5 K)
Enter temperature T for heat capacity Cs value:
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (0 ≤ T < Tλ or Tλ < T ≤ 5 K)T2:
N: (1 < N ≤ 10,000)
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α = Bρn/(2ρ), α' = B'ρn/(2ρ)
Enter temperature T for mutual friction coffecients B, B', α, α':
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Temperature:
(1.3 ≤ T < Tλ K)
α = Bρn/(2ρ), α' = B'ρn/(2ρ)
Enter temperature T for mutual friction coffecients B, B', α, α':
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (1.3 ≤ T < Tλ K)T2:
N: (1 < N ≤ 10,000)
Format of columns: T|B|B'|α|α'
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Enter temperature T for viscosity η and
kinematic viscosities ν = η/ρ and νn = η/ρn:
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Temperature:
(0.8 ≤ T ≤ 4.4 K)
Enter temperature T for viscosity η and
kinematic viscosities ν = η/ρ and νn = η/ρn:
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (0.8 ≤ T ≤ 4.4 K)T2:
N: (1 < N ≤ 10,000)
Format of columns: η|ν|νn
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Enter wavenumber Q in nanometres for the energy E:
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Wavenumber:
(0 ≤ Q ≤ 36 (nm-1))
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For .txt file enter range Q1 ≤ x ≤ Q2 and number of values N:
Q1: (0 ≤ Q ≤ 36 (nm-1))Q2:
N: (1 < N ≤ 10,000)
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Enter temperature T for thermal conductivity:
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Temperature:
(Tλ < T ≤ 4.2 K)
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (Tλ < T ≤ 4.2 K)T2:
N: (1 < N ≤ 10,000)
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Enter temperature T for saturated vapour pressure P:
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Temperature:
(0.65 ≤ T ≤ 5.1 K)
Enter temperature T for saturated vapour pressure P:
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (0.65 ≤ T ≤ 5.1 K)T2:
N: (1 < N ≤ 10,000)
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Enter temperature T for the normal fluid density ρn:
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Temperature:
(1.1 ≤ T ≤ Tλ K)
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (1.1 ≤ T ≤ Tλ K)T2:
N: (1 < N ≤ 10,000)
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Enter temperature T for the entropy S:
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Temperature:
(0.1 ≤ T ≤ 5 K)
Enter temperature T for the entropy S:
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For .txt file enter range T1 ≤ x ≤ T2 and number of values N:
T1: (0.1 ≤ T ≤ 5 K)T2:
N: (1 < N ≤ 10,000)
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