Titlebook: Relativistic Collisions of Structured Atomic Particles; Alexander Voitkiv,Joachim Ullrich Book 2008 Springer-Verlag Berlin Heidelberg 2008

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Considerations Beyond First Order Perturbation Theoryimation to treat the different aspects of the projectile-target collisions only provided the conditions ./. ? 1 and ./. ? 1 are fulfilled. If at least one of them is violated, then one has to look for better approaches which go beyond the first order perturbation theory. It is the goal of this chapter to briefly discuss some of such approaches.