Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
ELASTIC SCATTERING OF ATOMS AND MOLECULES IN THE THERMAL ENERGY RANGE. Final Report
Author: Nuclear Science Abstracts
Author: Scattering of Thermal Energy Atoms
Author: Bene PoelsemaPublisher:
ISBN: 9783662150900
Category :
Languages : en
Pages : 120
Book Description
Scattering Theory of Molecules, Atoms and Nuclei
Author: Luiz Felipe CantoPublisher: World Scientific
ISBN: 9814329843
Category : Science
Languages : en
Pages : 646
Book Description
The aim of the book is to give a coherent and comprehensive account of quantum scattering theory with applications to atomic, molecular and nuclear systems. The motivation for this is to supply the necessary theoretical tools to calculate scattering observables of these many-body systems. Concepts which are seemingly different for atomic/molecular scattering from those of nuclear systems, are shown to be the same once physical units such as energy and length are diligently clarified. Many-body resonances excited in nuclear systems are the same as those in atomic systems and come under the name of Feshbach resonances. We also lean heavily on semi-classical methods to explain the physics of quantum scattering OCo especially the interference seen in the angle dependence of the cross section. Having in mind a wide readership, the book includes sections on scattering in two dimensions which is of use in surface physics. Several problems are also included at the end of each of the chapters.
Thermal-energy Scattering of Atoms in High Rydberg States. Annual Progress Report, July 1, 1978--June 30, 1979. [Summaries of Research Activities at Oregon State Univ].
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Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
This research consists of an experimental study of the scattering of free atoms in high Rydberg states and their interaction with ground-state atomic and molecular targets. The highly excited Rydberg states, lying just below the ionization limit, describe a single weakly bound electron moving around a positive ion core. These states are characterized by large principal quantum numbers, long radiative lifetimes, and large cross sections for certain scattering processes. In the proposed investigations, differential cross sections will be measured for the deflection of high Rydberg atoms from an atomic beam. Preliminary scattering experiments, completed in the laboratory, have yielded cross sections which are virtually independent of the principal quantum number and in good agreement with calculations for deflection of the core ion alone. The deflection was also observed directly. If the momentum transfer takes place as an essentially free-ion process, then it is possible to obtain ion-scattering cross section from measurements with Rydberg atoms as projectiles. The presence of a distant valence electron provides a charge-neutralizing sheath surrounding the ion core, rendering its trajectory virtually unaffected by non-ionizing external fields. Since ion-beam scattering experiments have heretofore proven difficult at thermal energies, this research program seeks to develop and exploit a useful new method for the determination of velocity-resolved free-ion differential cross sections and the functional form of ion-atom and ion-molecule interaction potentials.
Scientific and Technical Aerospace Reports
Author: Physics Briefs
Author: Energy Research Abstracts
Author: ERDA Energy Research Abstracts
Author: United States. Energy Research and Development AdministrationPublisher:
ISBN:
Category : Medicine
Languages : en
Pages :
Book Description
Author: