Using a beam of electrons accelerated in an X-ray tube, we wish to knock an electron out of the K shell of a given element in a target, Section 7.8 gives the energies in a hydrogenlike atom as Z2(-13.6 eV/n2). Assume that for fairly high Z, a K-shell electron can be treated as orbiting the nucleus alone, (a) A typical accelerating potential in an X-ray tube is 50 kV. In roughly how high a Z could a hole in the AT-shell be produced? (b) Could a hole be produced in elements of higher Z?
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