Back to Search
Start Over
Probing Ultrafast Magnetic-Field Generation by Current Filamentation Instability in Femtosecond Relativistic Laser-Matter Interactions
- Source :
- Physical Review Research, Physical Review Research, 2020, 2, pp.023123. ⟨10.1103/PhysRevResearch.2.023123⟩, Physical Review Research, American Physical Society, 2020, 2, pp.023123. ⟨10.1103/PhysRevResearch.2.023123⟩, Physical Review Research 2(2020), 023123, Phys.Rev.Res., Phys.Rev.Res., 2020, 2 (2), pp.023123
- Publication Year :
- 2019
- Publisher :
- HAL CCSD, 2019.
-
Abstract
- International audience; The current filamentation instability is a key phenomenon underpinning various processes in astrophysics, laboratory laser-plasma, and beam-plasma experiments. Here we show that the ultrafast dynamics of this instability can be explored in the context of relativistic laser-solid interactions through deflectometry by low-emittance, highly relativistic electron bunches from a laser wakefield accelerator. We present experimental measurements of the femtosecond timescale generation of strong magnetic-field fluctuations, with a measured line-integrated B field of 2.70 ± 0.39 kT μm. Three-dimensional, fully relativistic particle-in-cell simulations demonstrate that such fluctuations originate from the current filamentation instability arising at submicron scales around the irradiated target surface, and that they grow to amplitudes strong enough to broaden the angular distribution of the probe electron bunch a few tens of femtoseconds after the laser pulse maximum. Our results open a branch of physics experiments investigating the femtosecond dynamics of laser-driven plasma instabilities by means of synchronized, wakefield-accelerated electron beams.
- Subjects :
- Accelerator Physics (physics.acc-ph)
accelerator
[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph]
FOS: Physical sciences
Physics::Optics
Electron
01 natural sciences
Instability
010305 fluids & plasmas
law.invention
Filamentation
law
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]
0103 physical sciences
010306 general physics
QC
plasma
laser wakefield
Physics
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Plasma acceleration
Laser
Physics - Plasma Physics
[PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph]
Magnetic field
laser
Plasma Physics (physics.plasm-ph)
laser plasma
Femtosecond
current filamentation
Physics::Accelerator Physics
Physics - Accelerator Physics
Atomic physics
Ultrashort pulse
Subjects
Details
- Language :
- English
- ISSN :
- 26431564
- Database :
- OpenAIRE
- Journal :
- Physical Review Research, Physical Review Research, 2020, 2, pp.023123. ⟨10.1103/PhysRevResearch.2.023123⟩, Physical Review Research, American Physical Society, 2020, 2, pp.023123. ⟨10.1103/PhysRevResearch.2.023123⟩, Physical Review Research 2(2020), 023123, Phys.Rev.Res., Phys.Rev.Res., 2020, 2 (2), pp.023123
- Accession number :
- edsair.doi.dedup.....6ab46051109c2734c872dae987db023f
- Full Text :
- https://doi.org/10.1103/PhysRevResearch.2.023123⟩