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Probing the Atom. Interactions of Coupled States, Fast Beams, and Loose Electrons - Mark-P Silverman

DATE DE SORTIE: 01/01/2000
ISBN: 0-691-00962-7
AUTEUR: Mark-P Silverman

Tutti i Mark-P Silverman libri che leggi e scarichi da noi


The many-faceted efforts to understand the structure and interactions of atoms over the past hundred years have contributed decisively and dramatically to the explosive development of physics. There is hardly a branch of modem physical science that does not in some seminal way rely on the fundamental principles and mathematical and experimental insights that derive from these studies. In particular, the drive to understand the singular features of the hydrogen atom-simultaneously the archetype of all atoms and the least typical atom-spurred many of the twentieth century's advances in physics and chemistry. This book gives an in-depth account of the author's own penetrating experimental and theoretical investigations of the hydrogen atom, while simultaneously providing broad lessons in the application of quantum mechanics to atomic structure and interactions.A pioneer in the combined use of atomic accelerators and radiofrequency spectroscopy for probing the internal structure of the hydrogen atom, Mark Silverman examines the general principles behind this far-reaching experimental approach. Fast-moving protons are directed into gas or foil targets from which they capture electrons to become hydrogen atoms moving uniformly at very high speeds. During their rapid passage through the spectroscopy chamber of the atomic accelerator, these atoms reveal by the light they emit fascinating details of their internal configuration and the interactions that created them.Silverman examines the effects of radiofrequency fields on the hydrogen atom clearly and systematically, explaining the details of these interactions at different levels of complexity and refinement, each level illuminating the physical processes involved from different and complementary perspectives.Readers interested in diverse areas of physics and physical chemistry will appreciate both the theoretical and practical implications of Silverman's studies and the personal style with which he relays them. This is a work of not only an outstanding research physicist, but a fine teacher who understands how curiosity underlies all science.

...s, from solid-state physics to structural biology3 ... Probing magnetic excitations and correlations in single ... ... . The electron is a subatomic particle, symbol e − or β −, whose electric charge is negative one elementary charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure. The electron has a mass that is approximately 1/1836 that of the proton. where is the Coulombic potential of the electron ... Probing the atom : interactions of coupled states, fast ... ... . where is the Coulombic potential of the electron in the field of the atom. Note that the spin-orbit interaction is proportional to . A proper derivation of Eq. (50) requires a relativistic treatment of the electron which is beyond the scope of these lectures. Note: A classical description of such interaction also gives a perturbation proportional to . This is because from the reference frame ... Spin-orbit coupling (SOC), the intrinsic interaction between a particle spin and its motion, is responsible for various important phenomena, ranging from atomic fine structure to topological condensed matter physics. The recent experimental breakthrough on the realization of SOC for ultra-cold atoms provides a completely new platform for exploring spin-orbit coupled superfluid physics. However ... While the many-atom interactions are the new feature of cold atoms, binary interactions are also important. For example, the use of a dipole blockadedipole blockade as a quantum gate has been proposed, and several variants of partial or local blockades have been observed. Finally, the dipole-dipole interaction leads to an attractive or repulsive force between two atoms, so that even if the ......