Tailored mesoscopic plasma accelerates electrons exploiting parametric instability

Rakesh Y. Kumar; Ratul Sabui; R. Gopal; Feiyu Li; Soubhik Sarkar; William Trickey; M. Anand; John Pasley; Z. M. Sheng; R. M.G.M. Trines; V. Sharma; M. Krishnamurthy

doi:10.1088/1367-2630/ad2ffc

Tailored mesoscopic plasma accelerates electrons exploiting parametric instability

Rakesh Y. Kumar, Ratul Sabui, R. Gopal, Feiyu Li, Soubhik Sarkar, William Trickey, M. Anand, John Pasley, Z. M. Sheng, R. M.G.M. Trines, V. Sharma, M. Krishnamurthy^*

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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 10¹⁶ 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.

Original language	English
Article number	033027
Number of pages	11
Journal	New Journal of Physics
Volume	26
Issue number	3
DOIs	https://doi.org/10.1088/1367-2630/ad2ffc
Publication status	Published - 18 Mar 2024

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Keywords

femtosecond lasers
laser plasma particle acceleration
plasma physics

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Kumar_2024_New_J._Phys._26_033027
© 2024 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft
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Cite this

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title = "Tailored mesoscopic plasma accelerates electrons exploiting parametric instability",

abstract = "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 1016 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.",

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AU - Kumar, Rakesh Y.

AU - Sabui, Ratul

AU - Gopal, R.

AU - Li, Feiyu

AU - Sarkar, Soubhik

AU - Trickey, William

AU - Anand, M.

AU - Pasley, John

AU - Sheng, Z. M.

AU - Trines, R. M.G.M.

AU - Sharma, V.

AU - Krishnamurthy, M.

PY - 2024/3/18

Y1 - 2024/3/18

N2 - 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 1016 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.

AB - 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 1016 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.

KW - femtosecond lasers

KW - laser plasma particle acceleration

KW - plasma physics

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DO - 10.1088/1367-2630/ad2ffc

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VL - 26

JO - New Journal of Physics

JF - New Journal of Physics

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Tailored mesoscopic plasma accelerates electrons exploiting parametric instability

Abstract

Bibliographical note

Keywords

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