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Kramers' law

 
Wikipedia: Kramers' law

Kramers' Law is a formula for the spectral distribution of X-rays produced by an electron hitting a solid target. The formula concerns only bremsstrahlung radiation, not the element specific characteristic radiation. It is named after its discoverer, the Dutch physicist Hendrik Anthony Kramers[1].

The formula for Kramers' law is usually given as the distribution of intensity vs. the wavelength of the emitted radiation:[2]

I(\lambda) d\lambda = K \left( \frac{\lambda}{\lambda_{min}} - 1 \right)\frac{1}{\lambda^2} d\lambda

The constant K is proportional to the atomic number of the target element.

References

  1. ^ Kramers, H.A. (1923). Phil. Mag. 46: 836. 
  2. ^ Laguitton, Daniel; William Parrish (1977). "Experimental Spectral Distribution versus Kramers' Law for Quantitative X-ray Fluorescence by the Fundamental Parameters Method". X-ray Spectrometry 6 (4): 201. 

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