Measuring the angular dependence of betatron x-ray spectra in a laser-wakefield accelerator

被引：8

作者：

Albert, F. ^{[1
]}

Pollock, B. B. ^{[1
]}

Shaw, J. L. ^{[2
]}

Marsh, K. A. ^{[2
]}

Ralph, J. E. ^{[1
]}

Chen, Y-H ^{[1
]}

Alessi, D. ^{[1
]}

Pak, A. ^{[1
]}

Clayton, C. E. ^{[2
]}

Glenzer, S. H. ^{[3
]}

Joshi, C. ^{[2
]}

机构：

[1] Lawrence Livermore Natl Lab, NIF & Photon Sci, Livermore, CA 94550 USA

[2] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

[3] SLAC Natl Accelerator Lab, Stanford, CA 94309 USA

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2014年 / 56卷 / 08期

关键词：

betatron x-rays; laser-wakefield accelerator; plasma; ELECTRON-BEAMS; PLASMA;

D O I：

10.1088/0741-3335/56/8/084016

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：

This paper presents a new technique to measure the angular dependence of betatron x-ray spectra in a laser-wakefield accelerator. Measurements are performed with a stacked image plates spectrometer, capable of detecting broadband x-ray radiation up to 1 MeV. It can provide measurements of the betatron x-ray spectrum at any angle of observation (within a 40 mrad cone) and of the beam profile. A detailed description of our data analysis is given, along with comparison for several shots. These measurements provide useful information on the dynamics of the electrons are they are accelerated and wiggled by the wakefield.

引用

页数：10

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