Fig. 6From: High-Quality Green-Emitting Nanodiamonds Fabricated by HPHT Sintering of Polycrystalline Shockwave DiamondsEPR spectra of the DP 0–0.05 fraction of diamond particles in the half magnetic field range (a) and around the resonant magnetic field of the singlet with strong signal at g-factor g ≈ 2.0027 (b). Microwave power PMW: 10 mW (a) and 0.03 mW (b). Microwave frequency ν = 9.44 GHz. Both spectra are registered in the regime far from saturationBack to article page