TURBULENCE EFFECTS ON THE CHARGE CAPTURE PROCESS IN WEAK TURBULENT PLASMAS

The turbulence effects on the charge capture process are investigated in weak turbulent plasmas. The effective interaction potential taking into account the correction factor to the nonlinear dielectric function due to the fluctuation of the electric fields and Bohr-Lindhard model are employed in order to obtain the electron capture radius and electron capture cross section in turbulent plasmas. It is shown that the influence of the fluctuating electric fields in the plasma considerably decreases the electron charge capture radius and electron capture probability. Hence, we have found that the turbulence effect strongly suppresses the electron capture cross section in weak turbulent plasmas. In addition, it is found that the electron capture radius and electron cross section decrease with an increase of the projectile energy.Y.-D.J. gratefully acknowledges Dr. M. Rosenberg for warm hospitality and useful discussions while visiting the University of California, San Diego. This paper is dedicated to the late Prof. R. J. Gould inmemory of exciting and stimulating collaborations on atomic processes in astrophysical plasmas. The authors thank Prof. E. T. Vishniac for suggesting improvements to this text. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant No. 2009-0071573)