1. What minimum x-ray tube voltage (in kV) would be required to excite the Ka1 (0.2290nm) line of chromium?2. The mass absorption coefficient for chromium measured using the copper Ka1 line is39.8 cm^2/g. Calculate the thickness of a chromium foil that was found to transmit36.8 % of the incident power of a beam of copper Ka1 radiation. The density ofchromium is 7.15 g/cm^3.
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