The total ionization cross sections of He, N2, H2 and O2 due to electron impact have been calculated by integrating the expressions given by Khare for the ionization cross sections per unit energy range. The results are in satisfactory agreement with the experimental data. Comparison has also bee...
For incident energies E i up to about 0.3 eV above the ionization threshold U He + we find that the cross section has the energy dependence ( E i U He +) α, where α = 1.055 ± 0.007. In this threshold region the probability distribution for the energies of both outgoing electrons ...
Photoelectron spectra of benzo[a]pyrene and benzo[e]pyrene have been assigned on the basis ofab initioelectron propagator theory. Electron correlation effects are included in the partial third order approximation and agreement with experimental peaks is very close. To each ionization energy, there cor...
Our calculation demonstrated the rapid decrease of QFM contribution with increase of the difference in energy of two outgoing electrons, and with decrease of the angle between two outgoing momenta. As a general feature, we observe the decrease of QFM contribution with nuclear charge growth....
We report triply and doubly differential cross sections for single ionization of helium by C 6+ impact at the incident energy of 100 MeV/amu. The calculation is based on the Glauber approximation (GA) method. A comparison is made of the present calculation with the results of other theoretica...
1.2 Ionization Energy The ionization energy of a dopant determines the fraction of dopants that contributes free carriers at a given temperature. A high ionization energy limits the doping efficiency: for instance, the ionization energy of Mg in GaN (around 200 meV) is so large that at room te...
摘要: The total ionization cross section of Ar atoms by metastable He atoms determined over the energy range 13–1500 eV by collecting slow ions measured with a quadrupolar mass analyser, is compared with existing experimental and theoretical results....
D13.6 eV Submit The ionisation potential of hydrogen atom is13.6eVThe energy required to remve as electron in then=2state of the hydrogen atom is View Solution If the ionization potential of hydrogen atom is13.6eV, the energy required to remove from the third orbit of hydrogen atom isk/2eV...
Vacuum ultraviolet absorption (VUVAS) and electron energy loss (EELS) spectroscopy have been performed on rare gas bubbles implanted in thin aluminum films. In the case of He-implanted Al films, broad spectral features in the region of 21-25 eV are observed experimentally and have been interpret...
Electron impact ionization (EI) is by far the most commonly used ionization technique in GC–MS. During the first phase, the molecules of a sample are bombarded by high-energy electrons (70 eV). When these electrons pass near neutral molecules, they may pass on sufficient energy to remove ...