학술논문
Manipulation of laser-accelerated proton beam profiles by nanostructured and microstructured targets
Document Type
article
Author
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)
Subject
Language
English
ISSN
2469-9888
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.