Active manipulation of the spatial energy distribution of laser-accelerated proton beams

被引：34

作者：

Carroll, D. C. ^{[1
]}

McKenna, P. ^{[1
]}

Lundh, O. ^{[2
]}

Lindau, F. ^{[2
]}

Wahlstrom, C. -G. ^{[2
]}

Bandyopadhyay, S. ^{[3
]}

Pepler, D. ^{[3
]}

Neely, D. ^{[3
]}

Kar, S. ^{[4
]}

Simpson, P. T. ^{[4
]}

Markey, K. ^{[4
]}

Zepf, M. ^{[4
]}

Bellei, C. ^{[5
]}

Evans, R. G. ^{[5
]}

Redaelli, R. ^{[6
]}

Batani, D. ^{[6
]}

Xu, M. H. ^{[7
]}

Li, Y. T. ^{[7
]}

机构：

[1] Univ Strathclyde, Dept Phys & Appl Phys, SUPA, Glasgow G4 0NG, Lanark, Scotland

[2] Lund Univ, Dept Phys, S-22100 Lund, Sweden

[3] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England

[4] Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim, North Ireland

[5] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England

[6] Univ Milan, Dipartimento Fis, I-20126 Milan, Italy

[7] Chinese Acad Sci, Inst Phys, Beijing Nat Lab Condensed Matter Phys, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW E | 2007年 / 76卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.76.065401

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The spatial energy distributions of beams of protons accelerated by ultrahigh intensity (> 10(19) W/cm(2)) picosecond laser pulse interactions with thin foil targets are investigated. Using separate, low intensity (< 10(13) W/cm(2)) nanosecond laser pulses, focused onto the front surface of the target foil prior to the arrival of the high intensity pulse, it is demonstrated that the proton beam profile can be actively manipulated. In particular, results obtained with an annular intensity distribution at the focus of the low intensity beam are presented, showing smooth proton beams with a sharp circular boundary at all energies, which represents a significant improvement in the beam quality compared to irradiation with the picosecond beam alone.

引用

页数：4

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