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arXiv 0906.3406astro-ph.SR
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太阳等离子体中的动态屏蔽

Dynamic screening in solar plasma

Dan Mao, Katie Mussack, Werner Däppen

备注：
15 pages, 5 figures, accepted for publication in Astrophysical Journal
发表信息：
Astrophys.J.701:1204-1208,2009
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摘要：

在太阳和恒星内部的热而致密的等离子体中，库仑势被屏蔽，导致核反应速率增加。虽然Salpeter的静态屏蔽近似被广泛接受并用于恒星建模，但核反应中的屏蔽问题已被重新讨论。特别是动态效应的问题已经提出了由Sznov和Sznov谁适用于技术的分子动力学的条件下，在太阳的核心，以数字确定的影响屏蔽。通过直接计算由于库仑相互作用的离子和电子的运动，模拟用于计算屏蔽的效果，而不需要Salpeter近似中固有的平均场假设。在本文中，我们再现了他们的数值分析的屏蔽能量的等离子体的太阳能核心，并得出结论，动态屏蔽的影响是相关的，并应包括恒星核反应率计算时。

英文摘要：

In the hot, dense plasma of solar and stellar interiors, Coulomb potentials are screened, resulting in increased nuclear reaction rates. Although Salpeter's approximation for static screening is widely accepted and used in stellar modeling, the question of screening in nuclear reactions has been revisited. In particular the issue of dynamic effects has been raised by Shaviv and Shaviv who apply the techniques of molecular dynamics to the conditions in the Sun's core in order to numerically determine the effect of screening. By directly calculating the motion of ions and electrons due to Coulomb interactions, the simulations are used to compute the effect of screening without the mean-field assumption inherent in Salpeter's approximation. In this paper we reproduce their numerical analysis of the screening energy in the plasma of the solar core and conclude that the effects of dynamic screening are relevant and should be included when stellar nuclear reaction rates are computed.

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