Atomic Collisions With 33 Tev Lead Ions
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Author | : |
Publisher | : |
Total Pages | : 22 |
Release | : 1996 |
Genre | : |
ISBN | : |
Recent availability of relativistic and ultrarelativistic beams of heavy ions has permitted the first controlled studies of atomic collisions at energies sufficient to measure effects of several new basic phenomena. These include measurements substantiating recently predicted finite nuclear size effects resulting in a reduction in the total electronic energy loss of heavy ions in matter, and measurements of Coulomb collisions in which electrons are excited from the Dirac negative energy continuum. Measurements of total energy loss, free electron-positron pair production, and electron capture from pair production have been recently performed using 33-TeV Pb{sup 82+} ions from the CERN SPS accelerator in Geneva. Results of these studies are presented, along with comparisons with relevant theory.
Author | : Alexander Voitkiv |
Publisher | : Springer Science & Business Media |
Total Pages | : 289 |
Release | : 2008-07-20 |
Genre | : Science |
ISBN | : 3540784217 |
During the last two decades the explorations of di?erent processes accom- nyingion–atom collisions athigh-impactenergieshavebeenasubjectofmuch interest. This interest was generated not only by the advent of accelerators of relativistic heavy ions which enabled one to investigate these collisions in an experiment and possible applications of obtained results in other ?elds of physics, but also by the variety of physical mechanisms underlying the atomic collisional phenomena at high impact energies. Often highly charged projectiles produced at accelerators of heavy ions are not fully stripped ions but carry one or more very tightly bound el- trons. In collisions with atomic targets, these electrons can be excited or lost and this may occur simultaneously with electronic transitions in the target. The present book concentrates on, and may serve as an introduction to, th- retical methods which are used to describe the projectile–electron transitions occurringinhigh-energycollisionsbetweenionsandneutralatoms.Special- tention is given to relativistic impact energies and highly charged projectiles. Experimental results are used merely as illustrations and tests for theory. This book will be useful to graduate students and professional scientists who are interested in studying atomic collisions occurring at high-impact - ergies. It assumes that the reader possesses the basic knowledge in classical electrodynamics and nonrelativistic and relativistic quantum mechanics.
Author | : Inga Tolstikhina |
Publisher | : Springer |
Total Pages | : 228 |
Release | : 2018-02-28 |
Genre | : Science |
ISBN | : 3319749927 |
This book provides an overview of the recent experimental and theoretical results on interactions of heavy ions with gaseous, solid and plasma targets from the perspective of atomic physics. The topics discussed comprise stopping power, multiple-electron loss and capture processes, equilibrium and non-equilibrium charge-state fractions in penetration of fast ion beams through matter including relativistic domain. It also addresses mean charge-states and equilibrium target thickness in ion-beam penetrations, isotope effects in low-energy electron capture, lifetimes of heavy ion beams, semi-empirical formulae for effective cross sections. The book is intended for researchers and graduate students working in atomic, plasma and accelerator physics.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2001 |
Genre | : |
ISBN | : |
We have used beams of 6.4-TeV S ions and 33.2-TeV Pb ions obtained from the CERN-SPS facility to study collision processes of heavy ions at ultrarelativistic energies. Measurements have been made of electron-positron pair production, and capture of an electron produced from the negative continuum onto bound states of the moving ion. Here we report on some aspects of these results. In a new formulation for the theory of electronic stopping power of ions at ultrarelativistic energies. Lindhard and S[o]rensen (LS) find that nuclear size effects should act to reduce the momentum transfer to electrons and hence the stopping power. Using the 33.2-Pb ions, we measured dE/dx in C, Si, Cu, Sn, and Pb targets. The LS theory was confirmed.
Author | : Oak Ridge National Laboratory |
Publisher | : |
Total Pages | : 230 |
Release | : 1999 |
Genre | : Nuclear energy |
ISBN | : |
Author | : T. Andersen |
Publisher | : American Inst. of Physics |
Total Pages | : 890 |
Release | : 1998-03-19 |
Genre | : Science |
ISBN | : 9781563962905 |
The main topics of these proceedings are photon impact, electron impact and heavy particle impact. Plenary papers on shell effects in clusters, atmospheric physics, collision physics and global change, and atomic physics using cooler storage rings are included.
Author | : Yohko Awaya |
Publisher | : |
Total Pages | : 428 |
Release | : 1997 |
Genre | : Electron-ion collisions |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 658 |
Release | : 1976 |
Genre | : Nuclear energy |
ISBN | : |
Author | : Yukikazu Itikawa |
Publisher | : American Inst. of Physics |
Total Pages | : 752 |
Release | : 2000-02-23 |
Genre | : Science |
ISBN | : 9781563967771 |
The International Conference on the Physics of Electronic and Atomic Collisions (ICPEAC) is the largest of the international conferences dealing with two-body dynamic interactions between photons, electrons, positrons, atoms, molecules, ions and clusters. These subjects are of fundamental importance in quantum physics and chemistry. They are also basic elementary processes in the fields of astrophysics, atmospheric science, gaseous electronics, plasma processing, nuclear fusion science and radiation physics and chemistry. This book includes all invited talks which cover fundamental physics (the nano-kelvin physics of Bose-Einstein condensation in atomic gases) to practical applications (ion beam treatment of cancer).
Author | : |
Publisher | : Academic Press |
Total Pages | : 391 |
Release | : 2014-05-14 |
Genre | : Science |
ISBN | : 0080859844 |
Atomic and Electron Physics