Fluence-Dependent Evolution of Paramagnetic Triplet Centers in e-Beam Irradiated Microcrystalline Ib Type HPHT Diamond Academic Article uri icon


  • Paramagnetic triplet centers produced by e-beam irradiation of synthetic microcrystalline Ib- type high-pressure high-temperature (HPHT) diamonds were studied by continuous wave (CW) electron paramagnetic resonance (EPR) spectroscopy at X-band (9.4 GHz), pulsed EPR at X-and Q-bands (34 GHz), and fluorescence spectroscopies as a function of radiation fluences up to 5× 1019 e–/cm2. EPR spectra of mostly “forbidden” Δ ms= 2 electronic spin transitions observed at g≈ 4 (ie., so-called half-field EPR spectra) reveal the presence of …

publication date

  • October 3, 2017