Author:
Passalidis Stylianos,Ettlinger Oliver C.,Hicks George S.,Dover Nicholas P.,Najmudin Zulfikar,Benis Emmanouil P.,Kaselouris Evaggelos,Papadogiannis Nektarios A.,Tatarakis Michael,Dimitriou Vasilis
Abstract
We study the optimization of collisionless shock acceleration of ions based on hydrodynamic modelling and simulations of collisional shock waves in gaseous targets. The models correspond to the specifications required for experiments with the
$\text{CO}_{2}$
laser at the Accelerator Test Facility at Brookhaven National Laboratory and the Vulcan Petawatt system at Rutherford Appleton Laboratory. In both cases, a laser prepulse is simulated to interact with hydrogen gas jet targets. It is demonstrated that by controlling the pulse energy, the deposition position and the backing pressure, a blast wave suitable for generating nearly monoenergetic ion beams can be formed. Depending on the energy absorbed and the deposition position, an optimal temporal window can be determined for the acceleration considering both the necessary overdense state of plasma and the required short scale lengths for monoenergetic ion beam production.
Publisher
Cambridge University Press (CUP)
Subject
Nuclear Energy and Engineering,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
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