Laser-driven proton acceleration from ultrathin foils with nanoholes

Abstract Structured solid targets are widely investigated to increase the energy absorption of high-power laser pulses so as to achieve efficient ion acceleration. Here we report the first experimental study of the maximum energy of proton beams accelerated from sub-micrometric foils perforated with...

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Autores principales:	Giada Cantono, Alexander Permogorov, Julien Ferri, Evgeniya Smetanina, Alexandre Dmitriev, Anders Persson, Tünde Fülöp, Claes-Göran Wahlström
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8a420eb249f5431f8c06f86ac19d62ad
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spelling	oai:doaj.org-article:8a420eb249f5431f8c06f86ac19d62ad2021-12-02T13:30:12ZLaser-driven proton acceleration from ultrathin foils with nanoholes10.1038/s41598-021-84264-z2045-2322https://doaj.org/article/8a420eb249f5431f8c06f86ac19d62ad2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84264-zhttps://doaj.org/toc/2045-2322Abstract Structured solid targets are widely investigated to increase the energy absorption of high-power laser pulses so as to achieve efficient ion acceleration. Here we report the first experimental study of the maximum energy of proton beams accelerated from sub-micrometric foils perforated with holes of nanometric size. By showing the lack of energy enhancement in comparison to standard flat foils, our results suggest that the high contrast routinely achieved with a double plasma mirror does not prevent damaging of the nanostructures prior to the main interaction. Particle-in-cell simulations support that even a short scale length plasma, formed in the last hundreds of femtoseconds before the peak of an ultrashort laser pulse, fills the holes and hinders enhanced electron heating. Our findings reinforce the need for improved laser contrast, as well as for accurate control and diagnostics of on-target plasma formation.Giada CantonoAlexander PermogorovJulien FerriEvgeniya SmetaninaAlexandre DmitrievAnders PerssonTünde FülöpClaes-Göran WahlströmNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Giada Cantono Alexander Permogorov Julien Ferri Evgeniya Smetanina Alexandre Dmitriev Anders Persson Tünde Fülöp Claes-Göran Wahlström Laser-driven proton acceleration from ultrathin foils with nanoholes
description	Abstract Structured solid targets are widely investigated to increase the energy absorption of high-power laser pulses so as to achieve efficient ion acceleration. Here we report the first experimental study of the maximum energy of proton beams accelerated from sub-micrometric foils perforated with holes of nanometric size. By showing the lack of energy enhancement in comparison to standard flat foils, our results suggest that the high contrast routinely achieved with a double plasma mirror does not prevent damaging of the nanostructures prior to the main interaction. Particle-in-cell simulations support that even a short scale length plasma, formed in the last hundreds of femtoseconds before the peak of an ultrashort laser pulse, fills the holes and hinders enhanced electron heating. Our findings reinforce the need for improved laser contrast, as well as for accurate control and diagnostics of on-target plasma formation.
format	article
author	Giada Cantono Alexander Permogorov Julien Ferri Evgeniya Smetanina Alexandre Dmitriev Anders Persson Tünde Fülöp Claes-Göran Wahlström
author_facet	Giada Cantono Alexander Permogorov Julien Ferri Evgeniya Smetanina Alexandre Dmitriev Anders Persson Tünde Fülöp Claes-Göran Wahlström
author_sort	Giada Cantono
title	Laser-driven proton acceleration from ultrathin foils with nanoholes
title_short	Laser-driven proton acceleration from ultrathin foils with nanoholes
title_full	Laser-driven proton acceleration from ultrathin foils with nanoholes
title_fullStr	Laser-driven proton acceleration from ultrathin foils with nanoholes
title_full_unstemmed	Laser-driven proton acceleration from ultrathin foils with nanoholes
title_sort	laser-driven proton acceleration from ultrathin foils with nanoholes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8a420eb249f5431f8c06f86ac19d62ad
work_keys_str_mv	AT giadacantono laserdrivenprotonaccelerationfromultrathinfoilswithnanoholes AT alexanderpermogorov laserdrivenprotonaccelerationfromultrathinfoilswithnanoholes AT julienferri laserdrivenprotonaccelerationfromultrathinfoilswithnanoholes AT evgeniyasmetanina laserdrivenprotonaccelerationfromultrathinfoilswithnanoholes AT alexandredmitriev laserdrivenprotonaccelerationfromultrathinfoilswithnanoholes AT anderspersson laserdrivenprotonaccelerationfromultrathinfoilswithnanoholes AT tundefulop laserdrivenprotonaccelerationfromultrathinfoilswithnanoholes AT claesgoranwahlstrom laserdrivenprotonaccelerationfromultrathinfoilswithnanoholes
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Laser-driven proton acceleration from ultrathin foils with nanoholes

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