Polarized electron-impact ionization of metastable helium
نویسندگان
چکیده
منابع مشابه
Ionization of Helium Near Threshold by Electron Impact
The threshold law for the cross section for ionization of simple monatomic gases by electron impact has recently been the subject of renewed interest 2. To date, studies of He+, using the retarding potential difference (RPD) technique 3 6 have been taken as support for, or interpreted with the aid of, a linear threshold law 7 , 8 . Recent studies with a 127° electrostatic energy selector have, ...
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The close-coupling approach to electron-helium single ionization is analyzed and several ways of defining the scattering amplitudes are determined, for both equaland unequal-energy outgoing electrons. Nevertheless, the various definitions all lead to the same cross section. The convergent close-coupling sCCCd method with Laguerre sCCC-Ld and box-based sCCC-Bd target functions is applied to calc...
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Singleand double-ionization processes in electron scattering from a model helium atom are calculated by a direct solution of the time-dependent Schrödinger equation on a 3D lattice. The Coulomb interaction between the electrons is described by v(r1 ,r2)51/r. and all angular momenta are set to zero. The initial state is a product of the ground state of the model helium atom on a 2D lattice with ...
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متن کاملComment on “Electron impact ionization of helium isoelectronic systems”
In a recent paper [1], Talukder proposed a new empirical formula for electron-impact ionization cross sections of He-like ions that was claimed to excellently agree with the available experimental and theoretical data. Discussing this agreement, the author of reference [1] makes extensive comparison with our recommended formula of reference [2] (referred to as “BRY” in [1] although it would be ...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 1989
ISSN: 0556-2791
DOI: 10.1103/physreva.40.6734