How can you minimize beam damage to sensitive samples?

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Multiple Choice

How can you minimize beam damage to sensitive samples?

Beam damage comes from the energy the X-ray beam deposits into the sample. To protect sensitive samples, lower the beam power and shorten the acquisition time, which reduces the dose the sample receives. Using scanning strategies or pulsed operation spreads or interrupts exposure so no one spot bears the full dose for too long, giving the sample time to thermally relax. Longer acquisition times would increase the dose and risk damage, so they’re not favorable. Simply drying the sample isn’t a reliable method to prevent beam damage and can alter the sample in other ways.

Beam damage comes from the energy the X-ray beam deposits into the sample. To protect sensitive samples, lower the beam power and shorten the acquisition time, which reduces the dose the sample receives. Using scanning strategies or pulsed operation spreads or interrupts exposure so no one spot bears the full dose for too long, giving the sample time to thermally relax. Longer acquisition times would increase the dose and risk damage, so they’re not favorable. Simply drying the sample isn’t a reliable method to prevent beam damage and can alter the sample in other ways.

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