A Microscopy and FTIR and PL Spectra Study of Polycrystalline Diamonds from Mengyin Kimberlite Pipes

Figure 4

Typical PL spectra of the polycrystalline diamonds from the Mengyin kimberlite pipes ((a) and (b) EFPCDs; (c) and (d) ARPCDs).

(a)

(b)

(c)

(d)