Electron channeling radiation from diamonds with and without platelets

Channeling‐radiation spectra produced by planar‐channeled, 30.5‐MeV electrons in Type‐Ia and Type‐IIa natural diamonds have been measured and are compared with previous results for 54.5‐MeV electrons. Because of the presence of platelets precipitated along the (100) planes in the Type‐Ia diamond, the energies of the (100) spectral peaks are shifted downward relative to those for the Type‐IIa diamond. We have developed a model to explain this effect.