justinthedeeps
Contributor
Do we know how much actual volume/moles/molecules of gas is involved here?you are off gassing He into the loop
How much He do we think enters and exits the body? I've heard it is less than a bar-liter (surface equivalent volume)
Might be a small fraction of overall loop volume. Less for helium than for nitrogen, due to lower solubility? Also gradually vented/replaced during ascent.
Found someone's work to quantify this here (for nitrogen)
https://wl.apsva.us/wp-content/uploads/sites/38/2017/03/IA-Sample-1.pdf