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In spherical sector analyser, __________ is detected and plotted as a function of energy.

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In spherical sector analyser, __________ is detected and plotted as a function of energy.

(a) Mass

(b) Charge

(c) Number of electrons striking the detector

(d) Mass to charge ratio

This question was posed to me in class test.

This intriguing question originated from Instrumentation for Electron Spectroscopy in portion Electron and Ion Spectrometers of Analytical Instrumentation

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The correct choice is (c) Number of electrons striking the detector

Easy explanation: In spherical sector analyser, the number of electrons striking the detector is detected and plotted as a function of energy. It is detected for a constant potential.

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