Which of the following are true about dynodes used in discrete dynode electron multiplier?(a) The dynodes are all kept at same voltage(b) Successive dynodes are held at lower potential(c) Successive dynodes are held at higher potential(d) All dynodes are held at very low potentialThis question was addressed to me during an online interview.I'm obligated to ask this question of Ion Transducers in division Mass Spectrometer of Analytical Instrumentation

Which of the following are true about dynodes used in discrete dynode

1.	Which of the following are true about dynodes used in discrete dynode electron multiplier?(a) The dynodes are all kept at same voltage(b) Successive dynodes are held at lower potential(c) Successive dynodes are held at higher potential(d) All dynodes are held at very low potentialThis question was addressed to me during an online interview.I'm obligated to ask this question of Ion Transducers in division Mass Spectrometer of Analytical Instrumentation
Answer» Correct option is (c) SUCCESSIVE dynodes are HELD at higher potential The best I can explain: In discrete dynode ELECTRON multiplier, successive dynodes are held at higher potential. Dynodes are metal PLATES with COPPER or beryllium surfaces.

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