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  Laser-generated Ion Beams for Medical Applications

Galow, B. J. (2012). Laser-generated Ion Beams for Medical Applications. PhD Thesis, Ruprecht-Karls-Universität, Heidelberg, Germany.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-3C6E-2 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-3C6F-F
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 Urheber:
Galow, Benjamin Joachim1, Autor           
Keitel, Christoph H.1, Gutachter           
Surzhykov, Andrey1, Gutachter           
Affiliations:
1Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society,, ou_904546              

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 Zusammenfassung: The advent of high-power laser systems paved the way for laser acceleration of ion beams. Based on theoretical simulations, we demonstrate the feasibility of laser-generated ion beams matching the strict requirements for radio-oncological applications. Particle energies of several hundred MeV and low energy spreads of 1% are feasible within the framework of direct laser acceleration. A mechanism is suggested to efficiently post-accelerate particle beams originating from laser-plasma interaction processes, where the injection of ions into the focus is modeled in a realistic way. Introducing a long-wavelength CO2 laser leads to an increase in the total number of particles accelerated as one bunch by three orders of magnitude as compared to lasers with a wavelength around 1 μm. By employing pulsed laser systems in a single- and a crossed-beams configuration, we show that ion beams of high particle numbers can be produced. In a different setting we put forward the interaction of a chirped laser pulse with a hydrogen gas target of spatial extension of the order of the laser wavelength studied by means of particle-in-cell simulations. The low frequency components of the laser pulse allow for generating clinically applicable beams already while interacting with state-of-the-art laser systems of intensities of 1021 W/cm2.

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 Datum: 2012-01-18
 Publikationsstatus: Angenommen
 Seiten: 84 S. : Ill., graph. Darst.
 Ort, Verlag, Ausgabe: Heidelberg, Germany : Ruprecht-Karls-Universität
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 Art des Abschluß: Doktorarbeit

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