Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Hans Kleinpoppen"'
Autor:
Hans Kleinpoppen, K. Blum
Publikováno v:
International Journal of Quantum Chemistry. 9:415-424
Investigations are considered in which either the increasing electrons or the atomic target system or both of the collision partners are polarized. The spin analysis of electron-atom scattering with spin-$sup 1$/$sub 2$ atoms (one- electron system) i
Autor:
Hans Kleinpoppen
Publikováno v:
International Journal of Quantum Chemistry. 8:59-72
Autor:
Hans Kleinpoppen, H.J. Beyer
Publikováno v:
International Journal of Quantum Chemistry. 12:271-287
The various types of anticrossing signals are discussed and their application to measure fine structure intervals and the nonlinear low field Stark effect of He/sup +/ and He is described. Experimental and theoretical results are compared.
Autor:
Hans Kleinpoppen, K. Blum
Publikováno v:
International Journal of Quantum Chemistry. 10:231-238
A density matrix formulation of atomic excitation by electron impact is given and applied to electron--photon coincidence experiments. Conditions are discussed under which coherent excitation can be expected.
Autor:
Hans Kleinpoppen
H. KLEINPOPPEN AND J. F. WILLIAMS It has only very recently become possible to study angular correlations and coherence effects in different areas of atomic collision processes: These investigations have provided us with an analysis of experimental d
Autor:
Hans Kleinpoppen, W.R. Newell
The EPSRC (Engineering and Physical Science Research Committee of the U. K.) suggested two Workshops (York University, 22-23 September, 1993 and 15-16 April, 1994) for possible development of polarized electron/photon physics as targeted areas of res
The main goal of this book is to elucidate what kind of experiment must be performed in order to determine the full set of independent parameters which can be extracted and calculated from theory, where electrons, photons, atoms, ions, molecules, or
Autor:
Jens Viefhaus, Uwe Becker, Hans Kleinpoppen, Björn Zimmermann, Georg Prümper, Oliver Geßner, Rainer Hentges
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 34:2707-2714
The effect of magnetic dichroism on the total ion yield of iron, i.e. in the absorption of polarized iron vapour, was observed for the first time far away from the threshold or autoionizing states. These observations can be explained by the orientati
Autor:
Hans Kleinpoppen, B Schmidtke, Jens Viefhaus, Markus Drescher, Björn Zimmermann, N. A. Cherepkov, Ulrich Heinzmann, Georg Prümper, Rainer Hentges, Burkhard Langer, Uwe Becker
Publikováno v:
Physical Review Letters. 85:5074-5077
The Linear magnetic dichroism in the angular distribution of Tl 5d and 6p photoelectrons and their dynamical spin polarization have been measured between h nu = 30 and 50 eV. In contrast to the Xe 5p photoionization at the 3d threshold, our results s
Autor:
Uwe Becker, Hans Kleinpoppen
Publikováno v:
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences. 357:1229-1258
In this paper, we initially list 23 subfields of the research topics associated with the title of this paper. Then we present a detailed theoretical description of polarizedelectron interactions with atoms and molecules. Spin effects based on Coulomb