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Molecular dynamic simulation for laser-cluster interaction

Holkundkar, Amol R·Mishra, Gaurav·Gupta, N K
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Abstract

A three dimensional relativistic molecular dynamic model for studying the laser interaction with atomic clusters is presented. The model is used to simulate the interaction dynamics of deuterium, argon, and xenon clusters when irradiated by the short and high intensity laser pulses. The interaction of 82 A argon cluster by 100 fs, 806 nm laser pulse with the peak intensity of 8 x 10{sup 15} W/cm{sup 2} is studied and compared with the experimental results. The maximum ion energy in this case is found to be about 200 keV. Ion energies along and perpendicular to laser polarization direction is calculated and asymmetry along laser polarization direction is detected which is further explained on the basis of charge flipping model. The effect of cluster density on the energetics of the laser-cluster interaction is also being studied, which provides a qualitative understanding of the presence of optimum cluster size for maximum ion energies.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY74 ATOMIC AND MOLECULAR PHYSICSARGONATOMIC CLUSTERSCALCULATION METHODSCOLLISIONSDEUTERIUMELEMENTSFLUIDSGASESHYDROGEN ISOTOPESINTERACTIONSISOTOPESLASER-PRODUCED PLASMALASERSLIGHT NUCLEIMOLECULAR DYNAMICS METHODMOLECULE COLLISIONSNONMETALSNUCLEIODD-ODD NUCLEIPHOTON COLLISIONSPHOTON-MOLECULE COLLISIONSPLASMAPLASMA SIMULATIONPOLARIZATIONRARE GASESSIMULATIONSTABLE ISOTOPESXENON

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Holkundkar, Amol R, Mishra, Gaurav, Gupta, N K. 2011-05-15. Molecular dynamic simulation for laser-cluster interaction. https://doi.org/10.1063/1.3581061

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