Dokl. Akad. Nauk SSSR, 1969 Volume 188, Number 5,Pages 1026–1027(Mi dan34956)
PHYSICS
Experimental observation of $^{13}\mathrm{C}^{4+}$, $^{29}\mathrm{Si}^{4+}$, $^{77}\mathrm{Se}^{4+}$, $\mathrm{S}^{4+}$ ions in the diamond lattice by means of the electron-spin resonance technique