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1. What minimum x-ray tube voltages (in kV) would be required to excite the Ka1 (0.2290nm)...

1. What minimum x-ray tube voltages (in kV) would be required to excite the Ka1 (0.2290nm) line of chromium? (Hint: Use the Duane Hunt equation.)

2. The mass absorption coefficient for chromium measured using the copper Ka1 line is 39.8 cm2/g. Calculate the thickness of a chromium foil that was found to transmit 36.8 % of the incident power of a beam of copper Ka1 radiation. The density of chromium is 7.15 g/cm3. (Hint: Use the mass absorption coefficient relationship.)

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