منابع مشابه
Electron impact double ionization of neon
Electron-impact double ionization from the valence shell of neon has been measured at an incident electron energy of 3662.5 eV. Double-coincidence (e, (3-1)e) measurements have been made between the scattered electron and each of the ejected electrons in turn, ejected energies were 10 eV and 90 eV, respectively, at ejection angles of 45, 60, 90, 120 and 135 degrees with respect to the incident ...
متن کاملElectron-impact double ionization of magnesium
Theory and experiment are compared for the electron-impact double ionization of Mg. Direct ionization cross sections, involving the simultaneous ionization of both 3s electrons, are calculated using a non-perturbative time-dependent close-coupling method. Indirect ionization cross sections, involving the ionization of either a 2p or 2s electron followed by autoionization, are calculated using a...
متن کاملElectron-impact double ionization of B+
Time-dependent close-coupling and time-independent distorted-wave methods are used to calculate the electron-impact double-ionization cross section for the 1s22s2 ground configuration of the B+ atomic ion. The direct double-ionization cross section is calculated using the non-perturbative close-coupling method between the direct double-ionization threshold of 63.1 eV and the 1s ionization thres...
متن کاملElectron-impact double ionization of H−
Electron-impact double ionization cross sections for H− are calculated using a non-perturbative time-dependent close-coupling theory. The total wavefunction for the three-electron system is represented by a coupled channels expansion involving simple products of three-dimensional radial lattices and six-dimensional coupled spherical harmonics. Following time evolution of the total wavefunction ...
متن کاملElectron-impact double ionization of beryllium
Time-dependent close-coupling, R-matrix double pseudo-states and distorted-wave methods are used to calculate the electron-impact double ionization cross section for the 1s22s2 ground state of the Be atom. At 1.5 times the double ionization threshold energy, the first two non-perturbative methods predict a cross section of approximately 1.0 × 10−18 cm2 for the direct double ionization of the 2s...
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ژورنال
عنوان ژورنال: Le Journal de Physique IV
سال: 1993
ISSN: 1155-4339
DOI: 10.1051/jp4:1993611