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Draw a neat labelled diagram of a typical X-ray spectrum. State and explain its important features. |
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Answer» Solution :Important features of a typical X-ray SPECTRUM : (1) There is abroad continuous distribution of wavelenghts of the X-rays, called as continuous X-rays.  (2) Superimposed on the continuous distribution are PEAKS of sharply defined wavelengths, called the CHARACTERISTIE X-rays, because they are unique characteristics of the element used as the target metal. (3) There is a sharply defined minimum or cutoff wavelength,`lamda _(min)` below which the continuous spectrum does not exist. On increasing the kinetie energy E of the electrons striking the target,`lamda _(min)`decreases but the wavelengths of the characteristic X-rays remain unchanged. The intensity at all wavelengths increases. |
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