Modeling of plasma dynamics in x-ray-confining cavities

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Abstract
The effect of the plasma expansion from the wall of a laser-heated spherical cavity and its collision at the center of the cavity has been studied using the m u l t i hydrocode. The simulations show an enhancement of the circulating x-ray flux due to kinetic-energy conversion into internal energy in the colliding plasma. The results of the simulations have been compared with the experimental observations from triple cavity targets. This comparison provides additional insight into the processes occurring in laser as well as in x-ray-heated cavities.