Etude Des Effets Relativistes En Regime Dinteraction Non Lineaire Entre Les Molecules Et Les Impulsions Laser Breves Dans Les Domaines De Frequences Xuv Et X Mous

Author : H.G. Muller
Publisher : Springer Science & Business Media
ISBN 13 : 9780792340485
Total Pages : 630 pages
Book Rating : 4.3/5 (44 download)

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Download or read book Super-Intense Laser-Atom Physics IV written by H.G. Muller and published by Springer Science & Business Media. This book was released on 1996-05-31 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atoms in strong radiation fields are interesting objects for study, and the research field that concerns itself with this study is a comparatively young one. For a long period after the ~scovery of the photoelectric effect. it was not possible to generate electro magnetic fields that did more than perturb the atom only slightly, and (first-or~er) perturbation theory could perfectly explain what was going on at those low intensities. The development of the pulsed laser bas changed this state of affairs in a rather dramatic way, and fields can be applied that really have a large, or even dominant influence on atomic structure. In the latter case, w~ speak of super-intense fields. Since the interaction between atoms and electromagnetic waves is characterized by many parameters other than the light intensity, such as frequency, iQnization potential, orbit time, etc., it is actually quite difficult to define what is exactly meant by the term 'super-intense'. Obviously the term does not have an absolute meaning, and intensity should always be viewed in relation to other properties of the system. An atom in a radiation field can thus best be described in terms of various ratios of the quantities involved. The nature of the system sometimes drastically changes if the value of one of these parameters exceeds a certain critical value, and the new regime could be called super-intense with respect to that parameter.