Tobias Ostermayr Relativistically Intense Laser–Microplasma Interactions 9783030222079

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Автор: Tobias Ostermayr
Название: Relativistically Intense Laser–Microplasma Interactions
ISBN: 9783030222079
Издательство: Springer
Классификация:

Прикладная математика

Физика плазмы

Оптика

Физика элементарных частиц и высоких энергий

Лазерные технологии и голография

ISBN-10: 3030222071
Обложка/Формат: Hardcover
Страницы: 166
Вес: 0.45 кг.
Дата издания: 2019
Серия: Springer Theses
Язык: English
Издание: 1st ed. 2019
Иллюстрации: 66 illustrations, color; 6 illustrations, black and white; xix, 166 p. 72 illus., 66 illus. in color.
Размер: 234 x 156 x 13
Читательская аудитория: Professional & vocational
Основная тема: Physics
Ссылка на Издательство: Link
Рейтинг:
Поставляется из: Германии
Описание:

This dissertation covers several important aspects of relativistically intense laser–microplasma interactions and some potential applications. A Paul-trap based target system was developed to provide fully isolated, well defined and well positioned micro-sphere-targets for experiments with focused peta-watt laser pulses. The laser interaction turned such targets into microplasmas, emitting proton beams with kinetic energies exceeding 10 MeV. The proton beam kinetic energy spectrum and spatial distribution were tuned by variation of the acceleration mechanism, reaching from broadly distributed spectra in relatively cold plasma expansions to spectra with relative energy spread as small as 20% in spherical multi-species Coulomb explosions and in directed acceleration processes. Numerical simulations and analytical calculations support these experimental findings and show how microplasmas may be used to engineer laser-driven proton sources.

In a second effort, tungsten micro-needle-targets were used at a peta-watt laser to produce few-keV x-rays and 10-MeV-level proton beams simultaneously, both measured to have only few-µm effective source-size. This source was used to demonstrate single-shot simultaneous radiographic imaging with x-rays and protons of biological and technological samples.

Finally, the dissertation discusses future perspectives and directions for laser–microplasma interactions including non-spherical target shapes, as well as thoughts on experimental techniques and advanced quantitative image evaluation for the laser driven radiography.

Дополнительное описание: Pat I: Introduction and basics.- Scienti?c context and motivation.- Laser-plasmas.- Part II: Experimental methods.- High-power lasers.- Transportable Paul trap for isolated micro-targets in vacuum.- Part III: Laser-microplasma interactions.- Laser-driven

Relativistically Intense Laser–Microplasma Interactions, Tobias Ostermayr