Laser-Driven Proton Acceleration Enhancement by Nanostructured Foils

被引：178

作者：

Margarone, D. ^{[1
]}

Klimo, O. ^{[1
,2
]}

Kim, I. J. ^{[3
]}

Prokupek, J. ^{[1
,2
]}

Limpouch, J. ^{[1
,2
]}

Jeong, T. M. ^{[3
]}

Mocek, T. ^{[1
]}

Psikal, J. ^{[1
,2
]}

Kim, H. T. ^{[3
]}

Proska, J. ^{[2
]}

Nam, K. H. ^{[3
]}

Stolcova, L. ^{[1
,2
]}

Choi, I. W. ^{[3
]}

Lee, S. K. ^{[3
]}

Sung, J. H. ^{[3
]}

Yu, T. J. ^{[3
]}

Korn, G. ^{[1
]}

机构：

[1] ASCR, Inst Phys, ELI Beamlines HiLASE Project, Prague 18221, Czech Republic

[2] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic

[3] Adv Photon Res Inst, GIST, Kwangju 500712, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 23期

关键词：

PLASMA; GENERATION; TARGETS; BEAMS; ELECTRON;

D O I：

10.1103/PhysRevLett.109.234801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nanostructured thin plastic foils have been used to enhance the mechanism of laser-driven proton beam acceleration. In particular, the presence of a monolayer of polystyrene nanospheres on the target front side has drastically enhanced the absorption of the incident 100 TW laser beam, leading to a consequent increase in the maximum proton energy and beam charge. The cutoff energy increased by about 60% for the optimal spheres' diameter of 535 nm in comparison to the planar foil. The total number of protons with energies higher than 1 MeV was increased approximately 5 times. To our knowledge this is the first experimental demonstration of such advanced target geometry. Experimental results are interpreted and discussed by means of 2 1/2-dimensional particle-in-cell simulations. DOI: 10.1103/PhysRevLett.109.234801

引用

页数：5

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