Cross-Beam Energy Transfer (CBET) Effect with Additional Ion Heating Integrated into the 2-D Hydrodynamics Code \textit{DRACO}

The cross-beam energy transfer (CBET) effect causes pump and probe beams to exchange energy via stimulated Brillouin scattering.\footnote{ W. L. Kruer, \textit{The Physics of Laser--Plasma Interactions}, Frontiers in Physics, Vol. 73, edited by D. Pines (Addison-Wesley, Redwood City, CA, 1988), p. 45.} The total energy gained does not, in general, equate to the total energy lost; the ion-acoustic wave comprises the residual energy balance, which can decay, resulting in ion heating.\footnote{ E. A. Williams\textit{ et al.}, Phys. Plasmas \textbf{11}, 231 (2004).} The additional ion heating can retune the conditions for CBET affecting the overall energy transfer as a function of time. CBET and the additional ion heating are incorporated into the 2-D hydrodynamics code \textit{DRACO}\footnote{ P. B. Radha\textit{ et al.}, Phys. Plasmas \textbf{12}, 056307 (2005).} as an integral part of the 3-D ray trace where CBET is treated self-consistently within on the hydrodynamic evolution. \textit{DRACO} simulation results employing CBET will be discussed. This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC52-08NA28302.