We investigate the absorption of two identical photons from the ground state of hydrogen-like atoms over an energy range that extends beyond that explored up to now. Our approach is based on a hybrid formula, valid in second-order perturbation theory, in which the A2 contribution from the ...
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The weighting factors β ν are chosen in such a way as to make all of the members of the basis set correspond to the energy of the state being represented. In this paper we apply the method to core ionization in atoms and atomic ions, using a basis where {\mathsf{V}_0({\bf x}...
India. K.Chakrabarti ∗ DepartmentofMathematics,ScottishChurchCollege, 1&3UrquhartSquare,Calcutta700009,India (Dated:February2,2008) Wepresentheretripledifferentialcrosssectionsforionizationofhydrogenatomsbyelectron impactat1eV,0.5eVand0.3eVenergyabovethreshold,calculatedinthehypersphericalpartial wavetheory.The...
Role of projectile continuum states in the ionization of atomic hydrogen by high-energy ion impact Ionization of atomic hydrogen in collisions with H+ and He2+ ions is studied by a large-scale coupled-channel calculation. It is demonstrated that high-lyi... N Toshima - 《Journal of Physics ...
Photoionization of protein ions: The ionization energy of polyprotonated protein cations in the gas phase measured using VUV synchrotron radiation appears to be correlated with the charge state z of the protein and its tertiary structure. A simple electrostatic model accounts for the results and also...
The Boltzmann and Saha Formulae Ionization of Hydrogen Thermodynamical Quantities for a Pure Hydrogen Gas Hydrogen–Helium Mixtures The General Case Limitation of the Saha Formula References References Other actions Export citation About this Book Reprints and Permissions Add to ...
Energy conservation demands that the energy of the ionizing carrier is at least as large as the band gap energy (cf. Fig. 3.13). However, momentum conservation is also required, which leads to a considerably larger ionization threshold energy En,pI. For isotropic and parabolic bands with equal...
Multiphoton resonant ionization in the case of a doubly degenerate intermediate bound state is studied. In the Keldysh-Feisal-Reiss approach, expressions for the energy and angular photoelectron distributions and the quasi-classical formula for the total rate of resonant ionization are obtained. It is...
Electron-impact ionization cross-sections and ionization rate coefficients for atoms and ions from hydrogen to calcium Using the empirical formula recently proposed, electron-impact ionization cross-sections for single ionization from the ground state are given for free ato... W Lotz - 《Zeitschrift ...