Ways of characteristic X-ray detection Wavelength Dispersive Spectrometry (WDS)uses the wavelength of x-rays. Energy Dispersive Spectrometry (EDS) uses the energy of the x-rays. hc 1.2396 E 三 or λ E(kev)= λ(nm) 19Ways of characteristic X-ray detection • Wavelength Dispersive Spectrometry (WDS) uses the wavelength of x-rays. • Energy Dispersive Spectrometry (EDS) uses the energy of the x-rays. 19 𝐸 = ℎ𝑐 𝜆 𝐸(𝑘𝑒𝑉) = 1.2396 𝜆(𝑛𝑚) or