Enhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma
Abstract The interaction of ultraintense laser pulses with solids is largely affected by the plasma gradient at the vacuum–solid interface, which modifies the absorption and ultimately, controls the energy distribution function of heated electrons. A micrometer scale-length plasma has been predicted...
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Nature Portfolio
2021
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oai:doaj.org-article:95ffd08bda0146f4aa5cd6432def202a2021-12-02T16:31:42ZEnhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma10.1038/s41598-021-93011-32045-2322https://doaj.org/article/95ffd08bda0146f4aa5cd6432def202a2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93011-3https://doaj.org/toc/2045-2322Abstract The interaction of ultraintense laser pulses with solids is largely affected by the plasma gradient at the vacuum–solid interface, which modifies the absorption and ultimately, controls the energy distribution function of heated electrons. A micrometer scale-length plasma has been predicted to yield a significant enhancement of the energy and weight of the fast electron population and to play a major role in laser-driven proton acceleration with thin foils. We report on recent experimental results on proton acceleration from laser interaction with foil targets at ultra-relativistic intensities. We show a threefold increase of the proton cut-off energy when a micrometer scale-length pre-plasma is introduced by irradiation with a low energy femtosecond pre-pulse. Our realistic numerical simulations agree with the observed gain of the proton cut-off energy and confirm the role of stochastic heating of fast electrons in the enhancement of the accelerating sheath field.Leonida A. GizziElisabetta BoellaLuca LabateFederica BaffigiPablo J. BilbaoFernando BrandiGabriele CristoforettiAlberto FazziLorenzo FulgentiniDario GiovePetra KoesterDaniele PallaPaolo TomassiniNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021) |
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Medicine R Science Q |
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Medicine R Science Q Leonida A. Gizzi Elisabetta Boella Luca Labate Federica Baffigi Pablo J. Bilbao Fernando Brandi Gabriele Cristoforetti Alberto Fazzi Lorenzo Fulgentini Dario Giove Petra Koester Daniele Palla Paolo Tomassini Enhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma |
| description |
Abstract The interaction of ultraintense laser pulses with solids is largely affected by the plasma gradient at the vacuum–solid interface, which modifies the absorption and ultimately, controls the energy distribution function of heated electrons. A micrometer scale-length plasma has been predicted to yield a significant enhancement of the energy and weight of the fast electron population and to play a major role in laser-driven proton acceleration with thin foils. We report on recent experimental results on proton acceleration from laser interaction with foil targets at ultra-relativistic intensities. We show a threefold increase of the proton cut-off energy when a micrometer scale-length pre-plasma is introduced by irradiation with a low energy femtosecond pre-pulse. Our realistic numerical simulations agree with the observed gain of the proton cut-off energy and confirm the role of stochastic heating of fast electrons in the enhancement of the accelerating sheath field. |
| format |
article |
| author |
Leonida A. Gizzi Elisabetta Boella Luca Labate Federica Baffigi Pablo J. Bilbao Fernando Brandi Gabriele Cristoforetti Alberto Fazzi Lorenzo Fulgentini Dario Giove Petra Koester Daniele Palla Paolo Tomassini |
| author_facet |
Leonida A. Gizzi Elisabetta Boella Luca Labate Federica Baffigi Pablo J. Bilbao Fernando Brandi Gabriele Cristoforetti Alberto Fazzi Lorenzo Fulgentini Dario Giove Petra Koester Daniele Palla Paolo Tomassini |
| author_sort |
Leonida A. Gizzi |
| title |
Enhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma |
| title_short |
Enhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma |
| title_full |
Enhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma |
| title_fullStr |
Enhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma |
| title_full_unstemmed |
Enhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma |
| title_sort |
enhanced laser-driven proton acceleration via improved fast electron heating in a controlled pre-plasma |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/95ffd08bda0146f4aa5cd6432def202a |
| work_keys_str_mv |
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1718383888310468608 |