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

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3479118· OSTI ID:22055877

Thorn, D B ^[1]; Geddes, C G. R.; Matlis, N H; Esarey, E H; Battaglia, M; Schroeder, C B; Shiraishi, S; Toth, C; Leemans, W P ^[2]; Plateau, G R ^[2]; Stoehlker, Th ^[3]

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1. ExtreMe Matter Institute EMMI, 64291 Darmstadt (Germany)
2. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
3. GSI Helmholtzzentrum fuer Schwereionenforschung, 64291 Darmstadt (Germany)

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.

• OSTI ID: 22055877
• Journal Information: Review of Scientific Instruments, Vol. 81, Issue 10; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
43 PARTICLE ACCELERATORS
BETATRON OSCILLATIONS
BETATRONS
CHARGE-COUPLED DEVICES
ELECTRON EMISSION
ELECTRON SPECTROSCOPY
ELECTRONS
ENERGY SPECTRA
EV RANGE
FOCUSING
HARD X RADIATION
IMAGES
LASER-PRODUCED PLASMA
PLASMA GUNS
TIME RESOLUTION
WAKEFIELD ACCELERATORS
X-RAY RADIOGRAPHY
X-RAY SPECTRA