Tailored mesoscopic plasma accelerates electrons exploiting parametric instability

Laser plasma electron acceleration from the interaction of an intense femtosecond laser pulse with an isolated microparticle surrounded by a low-density gas is studied here. Experiments presented here show that optimized plasma tailoring by introducing a pre-pulse boosts parametric instabilities to...

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Bibliographic Details
Published in:New journal of physics 2024-03, Vol.26 (3), p.33027
Main Authors: Kumar, Rakesh Y, Sabui, Ratul, Gopal, R, Li, Feiyu, Sarkar, Soubhik, Trickey, William, Anand, M, Pasley, John, Sheng, Z-M, Trines, R M G M, Scott, R H H, Robinson, A P L, Sharma, V, Krishnamurthy, M
Format: Article
Language:English
Subjects:
Electric fields
Electron acceleration
Electrons
Experiments
femtosecond lasers
Femtosecond pulsed lasers
Femtosecond pulses
Hot electrons
laser plasma particle acceleration
Laser plasmas
Lasers
Microparticles
Particle decay
Physics
plasma physics
Radiation
Rarefied gases
Temperature
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Summary:Laser plasma electron acceleration from the interaction of an intense femtosecond laser pulse with an isolated microparticle surrounded by a low-density gas is studied here. Experiments presented here show that optimized plasma tailoring by introducing a pre-pulse boosts parametric instabilities to produce MeV electron energies and generates electron temperatures as large as 200 keV with the total charge being as high as 350 fC/shot/sr, even at a laser intensity of a few times 10 16  Wcm −2 . Corroborated by particle-in-cell simulations, these measurements reveal that two plasmon decay in the vicinity of the microparticle is the main contributor to hot electron generation.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/ad2ffc