Quadrupole Mass Spectrometer Working Principle Animation - How to Measure Vacuum 

Abhijeet Chauhan m/e= k*(v/(r^2)(f^2)

+Lev Rovinsky And thank you for watching =)

+Captain Corrosion I'm doin a work on SIMS and this is very helpful!

+Lev Rovinsky Haha SIMS is surely on my list but i havent gotten to it yet. Although if you are interested in ion methods then perhaps you will enjoy our recently published video about low-energy ion scattering spectroscopy (LEIS).

I have the same question

The AC voltage has a frequency

Hello and thank you for the question! Even in decent vacuum, any fresh surface (e.g. freshly cut with ion beam) gets covered with a mono-molecular layer in a matter of seconds (a few ions every now and then wouldn't make much difference). Also, the energy of the ions would likely not be very high so they would hardly cause any damage to the rods and even if the rods were slightly eroded over time or covered with a thin layer of "crap", then it shouldn't matter much when carrying out the experiments. However, if they get too dirty over time (it depends on the total hours of usage and the nature of substrates), then the rods can be cleaned easily with something that doesn't scratch the rods - try lint free paper. So I believe the best answer I can come up with is regular maintenance, depending on the application.

okay, thank you for your answer!

Thanks for the feedback! Sadly we cannot edit existing videos online.

Ya that's correct it's too distractive

Btw very helpful video. Thanks 🙏

+Long Zhang His english is fine in my opinion :)

+kkt3289 Haha thanks!