Numerical Simulations of Droplet Impact by a Laser Pulse

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Group EUV Plasma Processes

This study focuses on the fluid response of the tin droplet to different pressure profiles which are a con-sequence of the prepulse laser. The understanding of the droplet shape is crucial to improve the production of EUV light and minimize the production of tin fragments which contaminate the machine. For this we perform axisymmetric simulations in Basilisk, a computation fluid dynamic package. This open source package uses the Volume-of-Fluid front capturing method along side an adaptive grid. Basilisk does not simulate the laser, therefore we introduce a pressure profile on the droplet as a boundary condition. We start by validating the code and find good agreement between Basilisk simulations and theoretical models as well as experimental data and other type of simulations.