Which approach is NOT used to reduce beam-induced damage to a sensitive sample?

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Multiple Choice

Which approach is NOT used to reduce beam-induced damage to a sensitive sample?

Explanation:
Beam-induced damage comes from the dose delivered to the sample. To reduce this damage, you want to lower the energy reaching the sample or shorten the time it spends under exposure. Pulsed operation delivers energy in short bursts with off periods, cutting the average dose. Lower power reduces the energy per unit time, decreasing the dose rate. Shortening acquisition times directly reduces the total time under beam, so the cumulative dose is smaller. Increasing acquisition time, on the other hand, increases total exposure and raises the risk of damage, so it’s not used to protect sensitive samples.

Beam-induced damage comes from the dose delivered to the sample. To reduce this damage, you want to lower the energy reaching the sample or shorten the time it spends under exposure. Pulsed operation delivers energy in short bursts with off periods, cutting the average dose. Lower power reduces the energy per unit time, decreasing the dose rate. Shortening acquisition times directly reduces the total time under beam, so the cumulative dose is smaller. Increasing acquisition time, on the other hand, increases total exposure and raises the risk of damage, so it’s not used to protect sensitive samples.

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