Interactive Properties of Liquid Helium (^{4}He) at Saturated Vapour Pressure

Interactive Properties of Liquid Helium (^{4}He) at Saturated Vapour Pressure

Values obtained as described by:

Russell J. Donnelly, and Carlo F. Barenghiat the Saturated Vapor Pressure

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Useful constants:

- Mass of a Helium atom:
- m
_{He}= 6.65 x 10^{-27}kg - Quantum Circulation:
- κ = 9.96 x 10
^{-7}kg m^{2}s^{-1} - Lambda Point:
- T
_{λ}= 2.1768 K

Enter temperature T for density ρ value.

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Temperature:

(0 ≤ T ≤ 4.9 K)

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

N: (1 < N ≤ 10,000)

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Enter temperature T for superfluid density ρ_{s} value:

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Temperature:

(0 ≤ T ≤ T_{λ} K)

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

N: (1 < N ≤ 10,000)

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Enter temperature T for first sound speed u_{1} value

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Temperature:

(0 ≤ T ≤ 4.2 K)

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

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Enter temperature T for second sound speed u_{2} value:

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Temperature:

(0.6 ≤ T ≤ T_{λ} K)

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

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Enter temperature T for heat capacity C_{s} value:

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Temperature:

(0 ≤ T < T_{λ} or T_{λ} < T ≤ 5 K)

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

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α = Bρ_{n}/(2ρ), α' = B'ρ_{n}/(2ρ)

Enter temperature T for mutual friction coffecients B, B', α, α':

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Temperature:

(1.3 ≤ T < T_{λ} K)

α = Bρ_{n}/(2ρ), α' = B'ρ_{n}/(2ρ)

Enter temperature T for mutual friction coffecients B, B', α, α':

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

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 ν_{n} = η/ρ_{n}:

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Temperature:

(0.8 ≤ T ≤ 4.4 K)

Enter temperature T for viscosity η and

kinematic viscosities ν = η/ρ and ν_{n} = η/ρ_{n}:

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

N: (1 < N ≤ 10,000)

Format of columns: η|ν|ν

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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 Q_{1} ≤ x ≤ Q_{2} and number of values N:

Q

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Enter temperature T for thermal conductivity:

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Temperature:

(T_{λ} < T ≤ 4.2 K)

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

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Enter temperature T for saturated vapour pressure P:

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Temperature:

(0.65 ≤ T ≤ 5.1 K)

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

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Enter temperature T for the normal fluid density ρ_{n}:

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Temperature:

(1.1 ≤ T ≤ T_{λ} K)

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For .txt file enter range T_{1} ≤ x ≤ T_{2} and number of values N:

T

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 T_{1} ≤ x ≤ T_{2} and number of values N:

T

N: (1 < N ≤ 10,000)

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