Question

Which of the following is placed just before the detector in a radiofrequency mass spectrometer?

(a) Ion source

(b) Potential energy selector

(c) Ionisation chamber

(d) Reflectron

I had been asked this question in an interview.

I'd like to ask this question from Radiofrequency Mass Spectrometer topic in section Mass Spectrometer of Analytical Instrumentation

Answer 1

Correct option is (b) Potential energy selector

The explanation: A potential energy selector is placed before the detector. It balances out the energy of the ion beam.