Spectroscopy of betatron radiation emitted from laser-produced wakefield accelerated electrons

X-ray betatron radiation is produced by oscillations of electrons in the intense focusing field of a laser-plasma accelerator. These hard x-rays show promise for use in femtosecond-scale time-resolved radiography of ultrafast processes. However, the spectral characteristics of betatron radiation hav...

Full description

Saved in:
Bibliographic Details
Published in:Review of scientific instruments 2010-10, Vol.81 (10), p.10E325-10E325-3
Main Authors: Thorn, D. B., Geddes, C. G. R., Matlis, N. H., Plateau, G. R., Esarey, E. H., Battaglia, M., Schroeder, C. B., Shiraishi, S., Stöhlker, Th, Tóth, C., Leemans, W. P.
Format: Article
Language:English
Subjects:
BETATRON OSCILLATIONS
BETATRONS
CHARGE-COUPLED DEVICES
ELECTRON EMISSION
ELECTRON SPECTROSCOPY
ELECTRONS
ENERGY SPECTRA
EV RANGE
FOCUSING
HARD X RADIATION
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LASER-PRODUCED PLASMA
PARTICLE ACCELERATORS
PLASMA GUNS
TIME RESOLUTION
WAKEFIELD ACCELERATORS
X-RAY RADIOGRAPHY
X-RAY SPECTRA
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:X-ray betatron radiation is produced by oscillations of electrons in the intense focusing field of a laser-plasma accelerator. These hard x-rays show promise for use in femtosecond-scale time-resolved radiography of ultrafast processes. However, the spectral characteristics of betatron radiation have only been inferred from filter pack measurements. In order to achieve higher resolution spectral information about the betatron emission, we used an x-ray charge-coupled device to record the spectrum of betatron radiation, with a full width at half maximum resolution of 225 eV. In addition, we have recorded simultaneous electron and x-ray spectra along with x-ray images that allow for a determination of the betatron emission source size, as well as differences in the x-ray spectra as a function of the energy spectrum of accelerated electrons.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3479118