Ion acceleration with an ultra-intense two-frequency laser tweezer

Ultra-intense lasers produce and manipulate plasmas, allowing to locally generate extremely high static and electromagnetic fields. This study presents a concept of an ultra-intense optical tweezer, where two counter-propagating circularly polarized intense lasers of different frequencies collide on...

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Bibliographic Details
Published in:New journal of physics 2020-05, Vol.22 (5), p.52002
Main Authors: Wan, Y, Andriyash, I A, Pai, C H, Hua, J F, Zhang, C J, Li, F, Wu, Y P, Nie, Z, Mori, W B, Lu, W, Malka, V, Joshi, C
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Acceleration
Circular polarization
Computer simulation
Electric fields
Electromagnetic fields
Foils
Ion beams
laser ion acceleration
Lasers
Particle in cell technique
Physics
plasma instability
Plasmas (physics)
two frequency laser tweezer
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Summary:Ultra-intense lasers produce and manipulate plasmas, allowing to locally generate extremely high static and electromagnetic fields. This study presents a concept of an ultra-intense optical tweezer, where two counter-propagating circularly polarized intense lasers of different frequencies collide on a nano-foil. Interfering inside the foil, lasers produce a beat wave, which traps and moves plasma electrons as a thin sheet with an optically controlled velocity. The electron displacement creates a plasma micro-capacitor with an extremely strong electrostatic field, that efficiently generates narrow-energy-spread ion beams from the multi-species targets, e.g. protons from the hydrocarbon foils. The proposed ion accelerator concept is explored theoretically and demonstrated numerically with the multi-dimensional particle-in-cell simulations.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ab8678