Get Electron Emission in Heavy Ion-Atom Collisions PDF

By Priv.-Doz. Dr. Nikolaus Stolterfoht, Professor Robert D. DuBois, Professor Roberto D. Rivarola (auth.)

ISBN-10: 3642083226

ISBN-13: 9783642083228

ISBN-10: 3662034808

ISBN-13: 9783662034804

Electron Emission in Heavy-Ion--Atom Collisions experiences the theoretical and experimental paintings of the final 30 years on non-stop electron emission in lively ion-atom collisions. Emphasis is put on the translation of ionization mechanisms. those mechanisms are interpreted by way of Coulomb facilities linked to the projectile, and aim nuclear fields, which strongly engage with naked projectiles, are taken care of as circumstances for single-projectile and objective facilities. basic houses of the two-center electron emission are analyzed with electron seize to the continuum and saddle-point electron emission as particular examples. For dressed projectiles, specific realization is dedicated to screening results, anomalies within the binary-encounter top construction, diffraction results, and dielectronic tactics concerning energetic electrons. a quick evaluate of a number of ionization tactics can also be offered. The survey concludes with an entire compilation of experimental reviews of ionization pass sections.

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1990) refer to their theoretical model as the impulse approximation (IA). To avoid confusion with this notation in other theoretical contexts, the present model is also referred to as the elastic scattering model [Richard (1996)]. It should be kept in mind that this model, similar to the binaryencounter theory, involves to a single projectile-center. Basic Model. The basic model assumption is that target electrons form a parallel beam incident on the projectile. Thus, the evaluation of the model begins in the projectile frame of reference and a projectile-to-laboratory frame transformation is applied to the final result.

At the end of the collision, one of the following situations is obtained: Ep = (i) Er > 0 and Ep > 0, corresponds to electron ionization; (ii) Er > 0 and Ep < 0, corresponds to electron capture; (iii) Er < 0 and Ep > 0, the electron remains bound to the target. 52) 30 3. Theoretical Work where Ni, Nc and Ne are the number of particles corresponding to the reaction, (i), (ii), and (iii), respectively, and N is the total number of histories corresponding to the impact parameter b. 52) over b. Another method to calculate the ionization and capture total cross section can be obtained by considering the condition of the uniform projectile beam.

88). 40 3. 89), we recover (3. 79) in Sect. 4 where the semiclassical approximation is treated. This shows that within the framework of energetic ion-atom collisions the B1 approximation and the semiclassical approximation are closely related. Accordingly, as the semiclassical model in Sect. 91), to as the free-electron peaking approximation. 2 First-Order Born Approximation For soft collisions (K « Ki), the electrons will preferably be ejected with small momentum k. Thus, the electrons will feel the potential of the target nucleus in the exit channel and its simple description by a plane wave should be improved.

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Electron Emission in Heavy Ion-Atom Collisions by Priv.-Doz. Dr. Nikolaus Stolterfoht, Professor Robert D. DuBois, Professor Roberto D. Rivarola (auth.)


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