Track helium outgassing and escape #447
Description
Escape processes leave the potential for helium worlds.
https://iopscience.iop.org/article/10.1088/0004-637X/807/1/8/meta
https://arxiv.org/pdf/2503.05055
We should track helium in PROTEUS. This can be readily fitted into the current framework. A quick search shows a few papers which may have solubility data. We don't need to worry about opacity.
https://www.nature.com/articles/nature04215
https://doi.org/10.1016/S0012-821X(00)00215-6
https://doi.org/10.1016/0016-7037(86)90193-6