Zobrazeno 1 - 10
of 69
pro vyhledávání: '"John F. Reading"'
Publikováno v:
Springer Handbook of Atomic, Molecular, and Optical Physics ISBN: 9783030738921
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54ea806a75764c0719321d699fcd7a82
https://doi.org/10.1007/978-3-030-73893-8_53
https://doi.org/10.1007/978-3-030-73893-8_53
Publikováno v:
Radiation Physics and Chemistry. 76:426-430
After three decades of intensive study PSS, CTMC, CDW and FHBS methods have emerged as acceptable methods for calculating cross sections for ion–atom collisions. Herein we focus on total theoretical cross sections for charge transfer in the p + H s
Autor:
François Frémont, Jean-Yves Chesnel, Jérémie Caillat, Jun Fu, P. Sobocinski, Alain Dubois, Jan Petter Hansen, R. Gayet, John F. Reading, I. Sundvor, W.F. Smith, Mathew J. Fitzpatrick
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:48-53
We present theoretical calculations of electron capture cross-sections for ion–atom and ion–molecule collisions in the intermediate impact energy range. The results stem from intensive computations based on quantal, semiclassical and classical ap
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:54-57
We present a critique of a finite Hilbert basis set calculation of the angular distribution of ejected electrons in a p + H collision at 20 keV.
Autor:
John F. Reading, Jun Fu
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 214:126-130
We revisit the question as to how cross sections for direct reactions, caused by a projectile of positive charge interacting with an atom at asymptotic velocities, heal to the first Born approximation. Finite Hilbert basis calculations indicate that
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 34:15-27
We present a simple method by which a finite Hilbert basis set calculation can be directly used to produce cross sections differential in the energy of electrons ejected in an ion-atom collision. We apply the method to compare with experiments on the
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 31:2477-2488
Forced impulse method (FIM) calculations of cross sections for the ionization of helium by energetic ions of various charge are analysed by studying intermediate-state dynamic correlation as it reveals the role of the interelectron interaction, , dur
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 132:231-235
We present multi-cut Forced Impulse Method (FIM) cross sections for the double ionization of helium by antiprotons in the energy range 12–1000 keV/amu. These ab initio theoretical cross sections largely reproduce experiments. The necessity of inclu
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 30:2889-2897
The independent event model (IEV) is used to calculate single and double electron removal cross sections for collisions. The single electron removal cross sections are in good agreement with experiment. In contrast to the model of Janev and co-worker
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 30:L189-L195
We present multi-cut forced impulse method cross sections for the single ionization of helium by antiprotons in the energy range . Eight segmented time intervals, bracketed by collapse onto fully correlated states, are needed to establish convergence