Abstract The diversity of the defects in the collection (50 samples) of diamonds from the Aikhal pipe (Yakutia) has been studied with IR, PL, and EPR spectroscopy. The specific features of crystals have been established; the obtained information leads to the discussion about the diamond formation and growth conditions. One of the specific features observed is a high concentration of platelets. According to the platelet behavior, most of the crystals are regular suggesting the growth temperature to be 1100–1200 °C. The concentrations of A and B defects have been evaluated and the same temperature conditions have been obtained according to the Taylor diagram. Using the EPR spectroscopy, the C and N3V centers have been found in many crystals suggesting the aggregation of nitrogen during residence in the mantle at high temperatures. An interesting feature has been observed in the PL spectra. For most crystals, the spectrum with ZPL at 563.5 nm is very intensive. The structure of the observed defect is remaining unknown, the spectrum disappears as a result of annealing at 600 °C indicating the interstitial-vacancy annihilation mechanism.

中文翻译：

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来自 Aikhal 管道（雅库特）的钻石的红外、光致发光和电子顺磁共振特征

摘要 已使用红外、PL 和 EPR 光谱研究了来自 Aikhal 管道（雅库特）的钻石集合（50 个样品）中缺陷的多样性。晶体的具体特征已经确定；获得的信息引发了关于钻石形成和生长条件的讨论。观察到的特定特征之一是高浓度的血小板。根据血小板行为，大多数晶体是规则的，表明生长温度为 1100-1200 °C。已经评估了 A 和 B 缺陷的浓度，并根据泰勒图获得了相同的温度条件。使用 EPR 光谱，在许多晶体中发现了 C 和 N3V 中心，这表明氮在高温下停留在地幔中时发生了聚集。在 PL 光谱中观察到一个有趣的特征。对于大多数晶体，563.5 nm 处的 ZPL 光谱非常密集。观察到的缺陷的结构仍然未知，光谱在 600 °C 下退火后消失，表明间隙空位湮灭机制。