Long-range attraction of an ultrarelativistic electron beam by a column of neutral plasma

被引：7

作者：

Adli, E. ^{[1
]}

Lindstrom, C. A. ^{[1
]}

Allen, J. ^{[2
]}

Clarke, C. I. ^{[2
]}

Frederico, J. ^{[2
]}

Gessner, S. J. ^{[2
]}

Green, S. Z. ^{[2
]}

Hogan, M. J. ^{[2
]}

Litos, M. D. ^{[2
]}

O'Shea, B. ^{[2
]}

Yakimenko, V. ^{[2
]}

An, W. ^{[3
]}

Clayton, C. E. ^{[3
]}

Marsh, K. A. ^{[3
]}

Mori, W. B. ^{[3
]}

Joshi, C. ^{[3
]}

Vafaei-Najafabadi, N. ^{[3
]}

Corde, S. ^{[4
]}

Lu, W. ^{[5
]}

机构：

[1] Univ Oslo, Dept Phys, NO-0316 Oslo, Norway

[2] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[3] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[4] Univ Paris Saclay, Ecole Polytech, CNRS, LOA,ENSTA ParisTech, F-91762 Palaiseau, France

[5] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China

来源：

NEW JOURNAL OF PHYSICS | 2016年 / 18卷

基金：

美国国家科学基金会;

关键词：

electron beams; plasma physics; plasma wakefield acceleration; transverse beam dynamics; FACET user facility; WAKEFIELD ACCELERATOR;

D O I：

10.1088/1367-2630/18/10/103013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the experimental observation of the attraction of a beam of ultrarelativistic electrons towards a column of neutral plasma. In experiments performed at the FACET test facility at SLAC we observe that an electron beam moving parallel to a neutral plasma column, at an initial distance of many plasma column radii, is attracted into the column. Once the beam enters the plasma it drives a plasma wake similar to that of an electron beam entering the plasma column head-on. A simple analytical model is developed in order to capture the essential physics of the attractive force. The attraction is further studied by 3D particle-in-cell numerical simulations. The results are an important step towards better understanding of particle beam-plasma interactions in general and plasma wakefield accelerator technology in particular.

引用

页数：10

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