What is the minimum voltage applied to an X-ray tube with a vanadium cathode for which the lines of the K_(alpha)-series appear?

What is the minimum voltage applied to an X-ray tube with a vanadium c

1.	What is the minimum voltage applied to an X-ray tube with a vanadium cathode for which the lines of the K_(alpha)-series appear?
Answer» Solution :The wavelength of the `K_(alpha)`-LINE for VANADIUM (Z = 23) MAY be determined from the Moseley law. This line can be resolved only if it does not lie outside the continuous SPECTRUM, i.e. if `lamda_(alpha)gthc//evarphi`. Hence `varphigt(hc)/(elamda_(alpha)),orvarphigt(3(Z-1)^(2)HCR)/(4e)`.

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What is the minimum voltage applied to an X-ray tube with a vanadium cathode for which the lines of the K_(alpha)-series appear?

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