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Superconductivity and Superfluidity
11.3.2 The Estimation of Characteristic Properties of He-3
The estimation of characteristic properties of He-3. The results of similar calculations
for the helium-3 properties are summarized in the Table 11.2.
Table 11.2
The characteristic properties of liquid helium-3.
parameter defining formula calculated value measured value
The velocity of zero-point
oscillations of ̂v 0 = cα 3 116.5
helium atom
The density of atoms
√
in liquid n 3 =
M 3 α 2
2m e a 3 B
m/s
1.88 · 10 22
helium-3 atom/cm 3
The density
of liquid γ = M 3n 3 93.7 82.3
helium-3, g/l
The dielectric
constant
√
ε−1
= 4π
ε+2 3 α2 M 3
2m e
1.035
of liquid helium-3
The boiling
temperature T boil ≃ 4 E x+y
3.27 3.19
3 k
of helium-3,K
The sound velocity
in liquid c s = 2 ̂v 0 233
helium-3
m/s
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