Enhanced laser-driven proton acceleration using nanowire targets

Abstract Laser-driven proton acceleration is a growing field of interest in the high-power laser community. One of the big challenges related to the most routinely used laser-driven ion acceleration mechanism, Target-Normal Sheath Acceleration (TNSA), is to enhance the laser-to-proton energy transfe...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	S. Vallières, M. Salvadori, A. Permogorov, G. Cantono, K. Svendsen, Z. Chen, S. Sun, F. Consoli, E. d’Humières, C.-G. Wahlström, P. Antici
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/620542ac9cbd4d1a82cb1cdcfe085402
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:620542ac9cbd4d1a82cb1cdcfe085402
record_format	dspace
spelling	oai:doaj.org-article:620542ac9cbd4d1a82cb1cdcfe0854022021-12-02T14:16:33ZEnhanced laser-driven proton acceleration using nanowire targets10.1038/s41598-020-80392-02045-2322https://doaj.org/article/620542ac9cbd4d1a82cb1cdcfe0854022021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80392-0https://doaj.org/toc/2045-2322Abstract Laser-driven proton acceleration is a growing field of interest in the high-power laser community. One of the big challenges related to the most routinely used laser-driven ion acceleration mechanism, Target-Normal Sheath Acceleration (TNSA), is to enhance the laser-to-proton energy transfer such as to maximize the proton kinetic energy and number. A way to achieve this is using nanostructured target surfaces in the laser-matter interaction. In this paper, we show that nanowire structures can increase the maximum proton energy by a factor of two, triple the proton temperature and boost the proton numbers, in a campaign performed on the ultra-high contrast 10 TW laser at the Lund Laser Center (LLC). The optimal nanowire length, generating maximum proton energies around 6 MeV, is around 1–2 $$\upmu$$ μ m. This nanowire length is sufficient to form well-defined highly-absorptive NW forests and short enough to minimize the energy loss of hot electrons going through the target bulk. Results are further supported by Particle-In-Cell simulations. Systematically analyzing nanowire length, diameter and gap size, we examine the underlying physical mechanisms that are provoking the enhancement of the longitudinal accelerating electric field. The parameter scan analysis shows that optimizing the spatial gap between the nanowires leads to larger enhancement than by the nanowire diameter and length, through increased electron heating.S. VallièresM. SalvadoriA. PermogorovG. CantonoK. SvendsenZ. ChenS. SunF. ConsoliE. d’HumièresC.-G. WahlströmP. AnticiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q S. Vallières M. Salvadori A. Permogorov G. Cantono K. Svendsen Z. Chen S. Sun F. Consoli E. d’Humières C.-G. Wahlström P. Antici Enhanced laser-driven proton acceleration using nanowire targets
description	Abstract Laser-driven proton acceleration is a growing field of interest in the high-power laser community. One of the big challenges related to the most routinely used laser-driven ion acceleration mechanism, Target-Normal Sheath Acceleration (TNSA), is to enhance the laser-to-proton energy transfer such as to maximize the proton kinetic energy and number. A way to achieve this is using nanostructured target surfaces in the laser-matter interaction. In this paper, we show that nanowire structures can increase the maximum proton energy by a factor of two, triple the proton temperature and boost the proton numbers, in a campaign performed on the ultra-high contrast 10 TW laser at the Lund Laser Center (LLC). The optimal nanowire length, generating maximum proton energies around 6 MeV, is around 1–2 $$\upmu$$ μ m. This nanowire length is sufficient to form well-defined highly-absorptive NW forests and short enough to minimize the energy loss of hot electrons going through the target bulk. Results are further supported by Particle-In-Cell simulations. Systematically analyzing nanowire length, diameter and gap size, we examine the underlying physical mechanisms that are provoking the enhancement of the longitudinal accelerating electric field. The parameter scan analysis shows that optimizing the spatial gap between the nanowires leads to larger enhancement than by the nanowire diameter and length, through increased electron heating.
format	article
author	S. Vallières M. Salvadori A. Permogorov G. Cantono K. Svendsen Z. Chen S. Sun F. Consoli E. d’Humières C.-G. Wahlström P. Antici
author_facet	S. Vallières M. Salvadori A. Permogorov G. Cantono K. Svendsen Z. Chen S. Sun F. Consoli E. d’Humières C.-G. Wahlström P. Antici
author_sort	S. Vallières
title	Enhanced laser-driven proton acceleration using nanowire targets
title_short	Enhanced laser-driven proton acceleration using nanowire targets
title_full	Enhanced laser-driven proton acceleration using nanowire targets
title_fullStr	Enhanced laser-driven proton acceleration using nanowire targets
title_full_unstemmed	Enhanced laser-driven proton acceleration using nanowire targets
title_sort	enhanced laser-driven proton acceleration using nanowire targets
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/620542ac9cbd4d1a82cb1cdcfe085402
work_keys_str_mv	AT svallieres enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT msalvadori enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT apermogorov enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT gcantono enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT ksvendsen enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT zchen enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT ssun enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT fconsoli enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT edhumieres enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT cgwahlstrom enhancedlaserdrivenprotonaccelerationusingnanowiretargets AT pantici enhancedlaserdrivenprotonaccelerationusingnanowiretargets
_version_	1718391668897480704

Enhanced laser-driven proton acceleration using nanowire targets

Ejemplares similares