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Modelling of laser plasma interaction with applications to particle acceleration and radiation generation
Doctoral thesis, 2019

For some applications, for example shock acceleration and instability growth, continuum methods, i.e. solving the Vlasov-Maxwell system of equations on a phase-space grid, may be preferable to accurately describe the plasma dynamics. In the first two papers in this thesis, we address the problem of implementing efficient continuum methods for the Vlasov-Maxwell system of equations. Furthermore, we treat ion shock acceleration using continuum methods. In the following papers, we address scalings of the electron spectrum in the electron sheath, formed at the vacuum-plasma boundary through the interaction of a relativistic laser and moderately overdense plasma. This is important to determine the spectral properties of high harmonic radiation generated from the laser plasma interaction. We also explore electron wakefield acceleration driven by laser pulses with wavelength in the X-ray regime generated from laser plasma interaction in the moderately overdense regime. By reducing the wavelength, the quantum parameter is enhanced, leading to comparable electron and photon energies already at moderate relativistic amplitudes although with more infrequent emission of photons than at optical wavelengths, preventing radiation losses from becoming a roadblock for the acceleration process.

plasma

ion acceleration

continuum methods

electron wakefield acceleration

raditation generation

coherent X-ray pulses

Vlasov-Maxwell equations

## Author

### Benjamin Svedung Wettervik

Chalmers, Physics, Theoretical Physics

### Vlasov modelling of laser-driven collisionless shock acceleration of protons

Physics of Plasmas,; Vol. 23(2016)p. 053103-

**Journal article**

### Relativistic Vlasov-Maxwell modelling using finite volumes and adaptive mesh refinement

European Physical Journal D,; Vol. 71(2017)p. 157-

**Journal article**

### Prospects and limitations of wakefield acceleration in solids

Physics of Plasmas,; Vol. 25(2018)

**Journal article**

### Physics of the laser-plasma interface in the relativistic regime of interaction

Physics of Plasmas,; Vol. 26(2019)

**Journal article**

### Roots

Basic sciences

### Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Fusion, Plasma and Space Physics

### ISBN

978-91-7905-152-5

Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie: 4619

### Publisher

Chalmers University of Technology

PJ lecture hall

Opponent: Professor Caterina Riconda