[jumpjamesjump]

Hi.

I’ve read through the mass spectrometry process many times but it says in my A level book that “the magnetic field strength is slowly increased.  As this happens different ions (ones with lower mass/charge ratio) can reach the detector”

Surely as you increase the magnetic field strength it would allow molecules with a LARGER mass/charge ratio to reach the detector since they have a higher momentum and require a higher force for deflection.

I’m fairly new to chemistry but feel convinced that the textbook is mistaken 

[Borek]

MS is definitely not my thing, but I agree, it sounds like the logic in the explanation is reversed.