| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to physical-chemical analysis methods and can be used in diamond analysis. Disclosed is a method of restoring temperature-time conditions for genesis of diamonds of the type IaAB or mixed type Ib-IaA, based on calculation, from local concentrations of impurity nitrogen in forms C, A and B in a crystal, measured for example by infrared microspectroscopy, of local values of an integral parameter Kt of aggregation kinetics of the n-th order of corresponding nitrogen centres. The method further includes recording the change in values of the integral aggregation parameter of corresponding nitrogen centres ?(Kt) on crystal growth layers, for example in any region of the thin diamond plate crossing the growth layers. The temperature T and time ?t of genesis are determined using the equation Aexp(-E/kT)×?t=?(Kt), where: kis Boltzmann constant, Aand Edenote Arrhenius constant and activation energy of the process of aggregation of C- or A-centres, corresponding to the aggregation kinetics order n.EFFECT: high reliability of recovering the history of genesis of a diamond crystal.5 cl, 8 tbl, 26 dwg |
