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Which of the following is the ideal vacuum for electron spectrometers?

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in Analytical Instrumentation by (131k points)
Which of the following is the ideal vacuum for electron spectrometers?

(a) 10^-6 torr

(b) 10^-7 torr

(c) 10^-8 torr

(d) 10^-9 torr

I had been asked this question during an online exam.

The question is from Instrumentation for Electron Spectroscopy in section Electron and Ion Spectrometers of Analytical Instrumentation

1 Answer

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The correct answer is (a) 10^-6 torr

To elaborate: 10^-6 torr is the ideal vacuum for electron spectrometers. Vacuum below 10^-6 torr can also be used.

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