Evaluation of Molecular-Dynamics Simulations for the Study of Hot Dense Coulomb Systems

Details Evaluation of Molecular-Dynamics Simulations for the Study of Hot Dense Coulomb Systems Evaluation of Molecular-Dynamics Simulations for the Study of Hot Dense Coulomb Systems

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..948..207m&link_type=abstract

UNSOLVED PROBLEMS IN STELLAR PHYSICS: A Conference in Honor of Douglas Gough. AIP Conference Proceedings, Volume 948, pp. 207-2

Physics

3

Solar Interior, Star Formation, Molecular Dynamics Methods

Scientific paper

In the plasma of solar and stellar interiors, Coulomb potentials are screened, resulting in increased nuclear reaction rates. Though Salpeter's approximation for static screening is widely accepted and used in stellar modelling, the question of screening in nuclear reactions has recently 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, they are able to compute the effect of screening without the mean field assumption inherent in Salpeter's approximation. However, Shaviv and Shaviv's work includes a variety of assumptions that must be evaluated before their results can be accepted. We carried out a pilot study of a small system under conditions similar to the solar core in order to examine the assumptions and approximations in Shaviv and Shaviv's numerical simulations. Our work confirms Shaviv and Shaviv's conclusion that instead of relying on the static approximation, dynamic effects must also be considered.

Affiliated with

Also associated with

No associations

Rating

Evaluation of Molecular-Dynamics Simulations for the Study of Hot Dense Coulomb Systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evaluation of Molecular-Dynamics Simulations for the Study of Hot Dense Coulomb Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evaluation of Molecular-Dynamics Simulations for the Study of Hot Dense Coulomb Systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1696176