Abstract
Laser hole boring is a process of ion expulsion from the path of an intense laser beam under the effect of the ponderomotive force. It is considered as a method for more efficient electron energy deposition in fast ignition of inertial fusion reactions. Analysis of the electron dynamics on the laser–plasma interface shows that the hole boring efficiency can be significantly enhanced by an appropriate temporal shaping of the laser pulse. The pulse shape optimization is carried out with a newly developed fast quasi-neutral particle-in-cell (PIC) code and verified with the full PIC simulations.
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