全校師生：
我校定于2017年11月23日舉辦研究生靈犀學術殿堂——Grygorii Dragan教授報告會，現將有關事項通知如下：
1.報告會簡介
報告人：Grygorii Dragan教授
時間：2017年11月23日（星期四）上午
地點：理學院學術報告廳
主題：The crystal-like structures of condensed grains in the smoky plasmas and the temperature of their “melting”
內容簡介：Properties of the smoky plasma with spatial organized structure condensed disperse particles (grains) are presented. The influence of size effects on the melting point of small crystalline structures analogous to that of metal oxides agglomerates or spatial ordered grain structures in smoky plasmas (plasma crystals) is considered. The dependence of the melting point of the crystal on the charges of grains and their concentration in plasma, determined using the Lindemann criterion, presented. The root-mean-square deviation of a grain under oscillations was determined as a function of the Einstein temperature. In this case, the experimental value of the frequency of electroacoustic oscillations of alumina particles in smoky plasma used as the frequency of oscillations. An expression obtained for determining the melting point of small grains as a function of the fractal dimension and the number of grains in the cluster. It is shown that the melting point of small crystalline structures increases sharply in the region of low grains concentrations and assimptotically approaches the melting point of a massive increasing concentration. It is assumed that the dependence of temperature of small particles on the size can be determinant agglomeration of oxide particles in the smoky plasmas.
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黨委研究生工作部
理學院
2017年11月22日
報告人簡介
Grygorii Dragan教授是烏克蘭最高科技獎獲得者，現為敖德薩大學物理學院院長，烏克蘭科學院常務副院長特使。
