heprops 0.3

Properties of the chemical element helium.

heprops is a simple python package implementing useful properties of the chemical element helium at low temperature

It includes experimental data and interpolation for the data found in the incredible and useful paper:

• James S. Brooks and Russell J. Donnelly, The calculated thermodynamic properties of superfluid helium-4, J. Phys. Chem. Ref. Data 6 51 (1977).

Most of the data in this paper was available on the late Russel Donnelly's former website http://pages.uoregon.edu/rjd which has since been taken offline but it is still available via a 2015 snapshot on the WayBackMachine.

Supported Python Versions

Python >= 3.6 (for f-strings)

Installation

To install via pip:

pip install git+git://github.com/agdelma/heprops.git#egg=heprops

Usage

At present the package has a single module helium which contains a number of functions that return the thermodynamics properties of helium. For example:

from heprops import helium
import numpy as np

T = np.linspace(0.5,2.5,5)

# the superfluid fraction
ρsoρ = helium.superfluid_fraction_SVP(T)
print(ρsoρ)

# the coherence length
ξ = helium.ξ(T)
print(ξ)

[1.    0.993 0.889 0.447 0.   ]
[4.11100244e-10 5.21483803e-10 7.56156315e-10 1.86293613e-09 1.24228114e-09]    

Support

The creation of this software was supported in part by the National Science Foundation under Award Nos. DMR-1808440 and DMR-1809027.