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Manipulation of laser-accelerated proton beam profiles by nanostructured and microstructured targets

Authors :
L. Giuffrida
K. Svensson
J. Psikal
M. Dalui
H. Ekerfelt
I. Gallardo Gonzalez
O. Lundh
A. Persson
P. Lutoslawski
V. Scuderi
J. Kaufman
T. Wiste
T. Lastovicka
A. Picciotto
A. Bagolini
M. Crivellari
P. Bellutti
G. Milluzzo
G. A. P. Cirrone
J. Magnusson
A. Gonoskov
G. Korn
C-G. Wahlström
D. Margarone
Source :
Physical Review Accelerators and Beams, Vol 20, Iss 8, p 081301 (2017)
Publication Year :
2017
Publisher :
American Physical Society, 2017.

Abstract

Nanostructured and microstructured thin foils have been fabricated and used experimentally as targets to manipulate the spatial profile of proton bunches accelerated through the interaction with high intensity laser pulses (6×10^{19} W/cm^{2}). Monolayers of polystyrene nanospheres were placed on the rear surfaces of thin plastic targets to improve the spatial homogeneity of the accelerated proton beams. Moreover, thin targets with grating structures of various configurations on their rear sides were used to modify the proton beam divergence. Experimental results are presented, discussed, and supported by 3D particle-in-cell numerical simulations.

Details

Language :
English
ISSN :
24699888
Volume :
20
Issue :
8
Database :
Directory of Open Access Journals
Journal :
Physical Review Accelerators and Beams
Publication Type :
Academic Journal
Accession number :
edsdoj.16a0160120f64c358a37e127a0016e80
Document Type :
article
Full Text :
https://doi.org/10.1103/PhysRevAccelBeams.20.081301