Emittance of positron beams produced in intense laser plasma interaction

被引：31

作者：

Chen, Hui ^{[1
]}

Sheppard, J. C. ^{[2
]}

Meyerhofer, D. D. ^{[3
]}

Hazi, A. ^{[1
]}

Link, A. ^{[1
]}

Anderson, S. ^{[1
]}

Baldis, H. A. ^{[4
]}

Fedosejev, R. ^{[5
]}

Gronberg, J. ^{[1
]}

Izumi, N. ^{[1
]}

Kerr, S. ^{[5
]}

Marley, E. ^{[4
]}

Park, J. ^{[4
]}

Tommasini, R. ^{[1
]}

Wilks, S. ^{[1
]}

Williams, G. J. ^{[4
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[2] Standford Univ, SLAC, Menlo Pk, CA 94025 USA

[3] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA

[4] Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA

[5] Univ Alberta, Dept Appl Sci, Edmonton, AB T6G 2R3, Canada

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 01期

关键词：

Positrons;

D O I：

10.1063/1.4789621

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 first measurement of the emittance of intense laser-produced positron beams has been made. The emittance values were derived through measurements of positron beam divergence and source size for different peak positron energies under various laser conditions. For one of these laser conditions, we used a one dimensional pepper-pot technique to refine the emittance value. The laser-produced positrons have a geometric emittance between 100 and 500mm.mrad, comparable to the positron sources used at existing accelerators. With 10(10)-10(12) positrons per bunch, this low emittance beam, which is quasi-monoenergetic in the energy range of 5-20 MeV, may be useful as an alternative positron source for future accelerators. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789621]

引用

页数：5

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