全校師生：
我校定于2017年11月23日舉辦研究生靈犀學(xué)術(shù)殿堂——Grygorii Dragan教授報(bào)告會(huì)，現(xiàn)將有關(guān)事項(xiàng)通知如下：
1.報(bào)告會(huì)簡(jiǎn)介
報(bào)告人：Grygorii Dragan教授
時(shí)間：2017年11月23日（星期四）上午
地點(diǎn)：理學(xué)院學(xué)術(shù)報(bào)告廳
主題：The crystal-like structures of condensed grains in the smoky plasmas and the temperature of their “melting”
內(nèi)容簡(jiǎn)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.
2.歡迎各學(xué)院師生前來(lái)聽(tīng)報(bào)告。報(bào)告會(huì)期間請(qǐng)關(guān)閉手機(jī)或?qū)⑹謾C(jī)調(diào)至靜音模式。
黨委研究生工作部
理學(xué)院
2017年11月22日
報(bào)告人簡(jiǎn)介
Grygorii Dragan教授是烏克蘭最高科技獎(jiǎng)獲得者，現(xiàn)為敖德薩大學(xué)物理學(xué)院院長(zhǎng)，烏克蘭科學(xué)院常務(wù)副院長(zhǎng)特使。
