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High Power Laser–Matter Interaction
In the present volume the main aspects of high-power laser–matter interaction in
the intensity range 1010–1022 W/cm2 are described. We offer a guide to this topic
for scientists and students who have just discovered the field as a new and attractive
area of research, and for scientists who have worked in another field and want to
join now the subject of laser plasmas. Being aware of the wide differences in the
degree of mathematical preparation the individual candidate has acquired we tried
to present the subject in an almost self-contained manner. To be more specific, a
bachelor degree in physics enables the reader in any case to follow without difficulty.
Generally fluid or gas dynamics and its relativistic version is not a part of
this education; it is developed in the context where it is needed. Basic knowledge in
theoretical mechanics, electrodynamics and quantum physics are the only prerequisites
we expect from the reader. Throughout the book the main emphasis is on the
various basic phenomena and their underlying physics. Not more mathematics than
necessary is introduced. The preference is given to ideas. A good model is the best
guide to the adequate mathematics.
There exist already some but not so many, however, good volumes and some
monographs on high-power laser interaction with matter. After research in this field
has grown over half a century and has ramified into many branches of fundamental
studies and applications producing continuously new results, there is no indication
of saturation or loss of attraction, rather has excitement increased with the years:
“There are no limits; horizons only” (G.A. Mourou). We take this as a motivation
for a new attempt of presenting our introduction to the achievements from the beginning
up to present. An additional aim was to offer a more unified or more detailed
view where this is possible now. Furthermore, the reader may find considerations
not encountered in existing volumes on the field, e.g., on ideal fluid dynamics,
dimensional analysis, questions of classical optics, instabilities and light pressure.
In view of the rapidly growing field of atoms, molecules and clusters exposed to
superstrong laser fields we considered it as compulsory to dedicate an entire chapter
to laser–atom interaction and to the various modern theoretical approaches related
to it. Finally, a consistent model of collisionless absorption is given.
Depending on personal preferences the reader may miss perhaps a section on
inertial fusion, on high harmonic generation and on radiation from the plasma, or
on traditional atomic and ionic spectroscopy. In view of the specialized literature
already available on the subjects we think the self-imposed restriction is justified.
Our referencing practice was guided by indicating material for supplementary studies
and establishing a continuity through the decades of research in the field rather
than by the aim of completeness. The latter nowadays is easily achievable with the
aid of the Internet.
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