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A new mechanism of direct coupling of laser energy to ions

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arxiv 1907.02105 v2 pith:VWOFFHXS submitted 2019-07-03 physics.plasm-ph

Ayushi Vashistha , Devshree Mandal , Atul Kumar , Chandrasekhar Shukla , Amita Das This is my paper · ORCID
classification physics.plasm-ph
keywords lasermechanismenergyabsorptionelectronfieldionsproposed
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The well-known schemes (e.g. Brunel, resonance absorption, JxB heating etc.) couple laser energy to the lighter electron species of the plasma. In this work, a fundamentally new mechanism of laser energy absorption directly to the heavier ion species has been proposed. The mechanism relies on the difference between the ExB drifts of electron and ions in the oscillating electric field of the laser and an external magnetic field to create charge density perturbations. The proposed mechanism is verified with the help of Particle - In - Cell (PIC) simulations using OSIRIS4.0.

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