Author: David Robert BatesPublisher:
ISBN:
Category : Electrons
Languages : en
Pages : 22
Book Description
Classical Calculations on Electron Capture
Author: David Robert BatesPublisher:
ISBN:
Category : Electrons
Languages : en
Pages : 22
Book Description
Classical and Quantal Calculations on Electron Capture
Author: Robert A. MapletonPublisher:
ISBN:
Category : Alkali metals
Languages : en
Pages : 334
Book Description
Classical and quantal nonrelativistic scattering between simple atomic systems is reviewed, and most approximations currently used in calculations on electron capture are discussed. The OBK interaction is generalized to include capture from neutral atoms by singly charged many-electron ions; the sum over the squares of the vector coupling coefficients is affected in the formula for the OBK cross section for p-orbital capture by protons into H(ns). The cross section for H(+) + H(1s) to H(Sigma n1) + H(+) at high impact energies is determined classically. The second Born amplitudes at high impact energies for H(+) + H(1s) to H(1s) + H(+) and H(+) + D(1s) to H(1s) + D(+) are evaluated approximately using the Green's function of the post Hamiltonian. Two modifications of Thomas' classical model for heavy atoms are proposed, and corresponding cross sections are calculated for H(+) + B to H(Sigma n1) + B(+) with B = O, N, Ne, A, Kr, Xe. A semiclassical theory is developed for charge transfer in alkali atom-alkali-ion collision at low impact velocities, and cross sections are obtained for H, Li, Na, K, Rb, Cs. OBK cross sections are calculated for s-orbital capture from He(1s(2)), N((4)S), O((3)P), and p-orbital capture from N((4)S), O((3)P), all for incident protons capturing into H(1s). Born prior and post cross sections are calculated for H(+) + O((3)P) to H(1s) + O(+)((4)S) and H(1s) + H(1s) to H( - )(1s(2)) + H(+).
Classical Calculations on Electron Capture
Author: David Robert BatesPublisher:
ISBN:
Category : Electrons
Languages : en
Pages : 0
Book Description
Classical and Quantal Calculations on Electron Capture
Author: Robert A. MapletonPublisher:
ISBN:
Category : Alkali metals
Languages : en
Pages : 0
Book Description
Classical and quantal nonrelativistic scattering between simple atomic systems is reviewed, and most approximations currently used in calculations on electron capture are discussed. The OBK interaction is generalized to include capture from neutral atoms by singly charged many-electron ions; the sum over the squares of the vector coupling coefficients is affected in the formula for the OBK cross section for p-orbital capture by protons into H(ns). The cross section for H(+) + H(1s) to H(Sigma n1) + H(+) at high impact energies is determined classically. The second Born amplitudes at high impact energies for H(+) + H(1s) to H(1s) + H(+) and H(+) + D(1s) to H(1s) + D(+) are evaluated approximately using the Green's function of the post Hamiltonian. Two modifications of Thomas' classical model for heavy atoms are proposed, and corresponding cross sections are calculated for H(+) + B to H(Sigma n1) + B(+) with B = O, N, Ne, A, Kr, Xe. A semiclassical theory is developed for charge transfer in alkali atom-alkali-ion collision at low impact velocities, and cross sections are obtained for H, Li, Na, K, Rb, Cs. OBK cross sections are calculated for s-orbital capture from He(1s(2)), N((4)S), O((3)P), and p-orbital capture from N((4)S), O((3)P), all for incident protons capturing into H(1s). Born prior and post cross sections are calculated for H(+) + O((3)P) to H(1s) + O(+)((4)S) and H(1s) + H(1s) to H( - )(1s(2)) + H(+).
Asymptotic Form of the Electron Capture Cross Section in the Impulse Approximation
Author: R. A. MapletonPublisher:
ISBN:
Category : Electrons
Languages : en
Pages : 10
Book Description
Nuclear Science Abstracts
Author: Electron Capture from Atomic Nitrogen and Oxygen by Protons
Author: R. A. MapletonPublisher:
ISBN:
Category : Electrons
Languages : en
Pages : 24
Book Description
Scientific and Technical Aerospace Reports
Author: Classical Treatment of Collisions Between Ions and Atoms or Molecules
Author: Francois FrémontPublisher: Springer Nature
ISBN: 3030894282
Category : Science
Languages : en
Pages : 247
Book Description
Since the beginning of the twentieth century, many experimental and theoretical works have been devoted to collisions between highly charged ions and atomic and molecular targets. It was realized that quantum mechanics is the only way, a priori, to describe such atomic phenomena. However, since quantum mechanics is very difficult to apply for collision systems with more than two particles, classical methods were very soon introduced and applied to simple collision systems and, subsequently, to more complicated systems. The results obtained by such classical methods were found to be surprisingly good, and classical mechanics is now well established, despite its approximations, as a replacement for or competition with quantum mechanics in many cases. In this book, the author will focus on the development of classical methods for describing collisional and post-collisional processes. The results will be compared with those found using quantum mechanical models, in order to demonstrate the ability of the classical approach to obtain many features and details of collision systems.
Author: Martin Braß