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Development and Applications of a Laser-Wakefield X-ray Source (updated)

Gallardo Gonzalez, Isabel LU (2019)
Abstract
In laser-wakefield acceleration (LWFA), a femtosecond laser pulse is tightly focused in a gas to intensities exceeding 1018 W/cm2 . The laser radiation ionizes the medium and excites a plasma wave that travels behind the laser pulse. Electrons can be trapped in the oscillations in the plasma density, where electric fields of the order of several hundreds of GV/m accelerate them to relativistic energies. Together with the longitudinal accelerating fields, transverse electromagnetic forces keep the electrons oscillating in the three-dimensional plasma structure around the direction of propagation of the laser. These betatron oscillations cause the emission of X-ray pulses with a broadband spectrum and femtosecond duration.
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author
supervisor
opponent
  • Professor Kaluza, Malte C, Friedrich-Schiller-University, Jena, Germany
organization
publishing date
type
Thesis
publication status
published
subject
keywords
laser-wakefield acceleration, betatron radiation, ionization-induced trapping, direct laser acceleration, laser-wakefield merging, warm dense matter, phase-contract imaging
edition
2
pages
234 pages
publisher
Division of Atomic Physics, Department of Physics, Faculty of Engineering, LTH, Lund University
defense location
Rydbergsalen, Fysicum, Professorsgatan 1, Lund University, Faculty of Engineering LTH.
defense date
2018-12-07 09:15:00
language
English
LU publication?
yes
additional info
This version has been modified in order to include those papers already published (and with the corresponding copyright permission), update of some of the experimental results, and correction or erratas in the text and figures (June 2019).
id
265c472f-0e25-456b-a427-3157df9775db
date added to LUP
2019-06-28 13:17:16
date last changed
2020-01-20 10:57:25
@phdthesis{265c472f-0e25-456b-a427-3157df9775db,
  abstract     = {In laser-wakefield acceleration (LWFA), a femtosecond laser pulse is tightly focused in a gas to intensities exceeding 1018 W/cm2 . The laser radiation ionizes the medium and excites a plasma wave that travels behind the laser pulse. Electrons can be trapped in the oscillations in the plasma density, where electric fields of the order of several hundreds of GV/m accelerate them to relativistic energies. Together with the longitudinal accelerating fields, transverse electromagnetic forces keep the electrons oscillating in the three-dimensional plasma structure around the direction of propagation of the laser. These betatron oscillations cause the emission of X-ray pulses with a broadband spectrum and femtosecond duration.},
  author       = {Gallardo Gonzalez, Isabel},
  language     = {eng},
  publisher    = {Division of Atomic Physics, Department of Physics, Faculty of Engineering, LTH, Lund University},
  school       = {Lund University},
  title        = {Development and Applications of a Laser-Wakefield X-ray Source (updated)},
  url          = {https://lup.lub.lu.se/search/ws/files/66748969/_2018_Gallardo_Gonz_lez_I._Development_and_Applications_of_a_Laser_Wakefield_X_ray_Source_updated_.pdf},
  year         = {2019},
}