Are There Alternatives to Mass Spectrometry for Measuring Charged Particles?

[Sheyr]

Is mass spectrometry the only technique used to measure the mass of charged particles? In other words is it possible to measure the mass directly or is the measurement of mass-to-charge ratio the only way to get the mass?

S.

 

[Meir Achuz]

I think the most accurate mesurement of the mass of the muon is by accurate measurement of the energy levels of muonic atoms (a mu bound to a proton). The binding energy is proportional to the mass.