Modeling the interaction of keV clusters with molecular solids

Modeling the interaction of keV clusters with molecular solids
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模拟 keV 簇与分子固体的相互作用

DOI:
10.1002/sia.3530
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发表时间:
2011
影响因子:
1.7
通讯作者:
Mody J
Mody J
中科院分区:
化学4区
文献类型:
--
作者:
Mody J

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使用多原子(团簇)离子束的西姆斯已被证明是一种有效的方法,用于表征固体。计算机模拟程序,如分子动力学(MD)经常运行,以深入了解在这些情况下发生的离子-固体相互作用;然而,为了模拟能够做出准确的预测,需要大量的计算资源。这些包括几个月的模拟时间和使用非常大的目标,更不用说一个单一的模拟运行是一个单一的离子轨迹的代表。因此,MD模拟对于深入了解离子-固体相互作用是非常宝贵的,但是当时间限制到位时,能够提供信息就不那么重要了。这里的工作旨在实现一个预测模型,当完全功能时,将能够处理时钟的压力。我们相信,这是可以实现的,通过采用更简单的建模标准,依赖于在照射下的目标内的初始能量沉积分布的方面。版权所有© 2010约翰威利父子有限公司.
The use of polyatomic (cluster) ion beams for SIMS has proven to be an efficient method for the characterization of solids. Computer simulation programs such as Molecular Dynamics (MD) are often run to gain an insight into the ion‐solid interactions that take place under these circumstances; however, for simulations to be able to make accurate predictions, a massive amount of computational resources are required to be at hand. These include several months in simulation time and the use of very large targets, not to mention that a single simulation run is a representation of only a single ion trajectory. Thus, MD simulations are invaluable for gaining insight into ion‐solid interactions but are less so for being able to provide information when time constraints are put in place. The work here aims to achieve a prediction model that, when completely functional, will be able to deal with the pressures of the clock. This, we believe, is achievable by employing simpler modeling criteria that are dependant upon aspects of an initial energy deposition profile within the target under irradiation. Copyright © 2010 John Wiley & Sons, Ltd.
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