What maximum thickness of aluminum foil could be used

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Aluminum is to be used as windows for a cell for X-ray absorption measurements with the Ag Ka line. The mass absorption coefficient for aluminum at this wavelength is 2.74; its density is 2.70 g/cm3. What maximum thickness of aluminum foil could be used to fabricate the windows if no more than 3.5% of the radiation is to be absorbed by them?

Reference no: EM131083795

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