论文标题
用质子播种形成氩簇
Formation of Argon Cluster with Proton Seeding
论文作者
论文摘要
我们采用力场分子动力学模拟来研究成核与新液体或固体相的动力学，并在颗粒的密集气体中，并用离子接种。我们在氩原子和质子之间使用精确的原子对相互作用，具有物理上正确的长距离行为。分子簇形成的时间依赖性在不同的质子浓度，温度和氩气密度下进行分析。鉴定并分析了用氩气的质子播种的修饰相变。气体的播种增强了纳米大小的原子簇的形成及其聚集。质子和浴气原子之间的强烈吸引力稳定了大型纳米簇和蒸发的临界温度。提出了一个分析模型来描述氩气液滴的稳定性，并与分子动力学模拟进行了比较。
We employ force-field molecular dynamics simulations to investigate the kinetics of nucleation to new liquid or solid phases in a dense gas of particles, seeded with ions. We use precise atomic pair interactions, with physically correct long-range behavior, between argon atoms and protons. Time-dependence of molecular cluster formation is analyzed at different proton concentration, temperature and argon gas density. The modified phase transitions with proton seeding of the argon gas are identified and analyzed. The seeding of the gas enhances the formation of nano-size atomic clusters and their aggregation. The strong attraction between protons and bath gas atoms stabilizes large nano-clusters and the critical temperature for evaporation. An analytical model is proposed to describe the stability of argon-proton droplets, and is compared with the molecular dynamics simulations.
