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(a) An X-ray tube produces a continuous ...

(a) An X-ray tube produces a continuous spectrum of radiation with its shorts wavelength end ate`0.45 Å`. What is the maximum energy of the photon in the radiation? (b) From your answer to (a) , guess what order of accelerating voltage (for electrons) is required in such a tube?

Text Solution

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a. `lambda_(min) = 0.45 Å`
`E_(max) = h V_(max) = (hc)/(lambda_(min))`
`= (12431)/(0.45) = 2764.44 e V = 27.624 keV`
b. The minimum accelerating voltage for electron is
`(27.6 keV)/(0.45) = 27.6 kV, i.e. of the order of 30 kV`.
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