Mass spectrometry30 Aug 2024 19:38
I believe I’m invested here and invested quite heavily indeed on the basis of sound reasoning, but despite having been here since April the timing of my top-ups since have been so inopportune that at 19p it’s possible that some people who’ve waltzed in and bought their first shares this week are now sitting on better averages than me, so inevitably I find myself wondering what else I might have got wrong!
Anyway, while we all wait for news with a mixture of confidence and terror, I don’t suppose someone could enlighten me please as to why the presence of hydrogen would be expected to suppress helium readings made through mass spectrometry? I’ve had a ridiculously busy week so only just catching up now, but my understanding is that whilst the mass to charge ratio of hydrogen ions can overlap with He3, I would have presumed we’re only really interested in He4 here as the former would only be expected to be present in absolutely minute amounts. In the case of He4 on the other hand interference I understand would require hydrocarbons to be present in the gas mixture which I don’t think we’re expecting in significant quantities. I’m guessing He4 is not normally measured directly but somehow inferred through He3 measurement?? Not doubting DM’s statement for a moment, just curious!