Titlebook: Coherence and Correlation in Atomic Collisions; H. Kleinpoppen,J. F. Williams Book 1980 Plenum Press, New York 1980 Cross section.atom.ato

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https://doi.org/10.1007/978-1-4613-2997-8Cross section; atom; atomic collision; autoionization; collision; elastic scattering; electrons; energy; exc

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978-1-4613-2999-2Plenum Press, New York 1980

过份好问

Second-Order Semilinear Evolution Equations,Time-dependent perturbation theory is used to study the generalized cross sections for the two-photon ionization of a metastable helium atom. Multipole interference effects are considered. It is shown that for certain photon frequencies, significant enhancement of cross section occurs due to the quadrupole effects.

史前

Background on Semimagnetic Semiconductors,Threshold and pseudothreshold excitation of diatomic molecules are considered. In particular it is shown that certain geometrical factors, which suggest a preferential population of particular magnetic substates, can be separated from the excitation amplitudes. The case of excitation is discussed in detail.

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CLEAR

Interference Effects in the Multiphoton Ionization of Atoms,Time-dependent perturbation theory is used to study the generalized cross sections for the two-photon ionization of a metastable helium atom. Multipole interference effects are considered. It is shown that for certain photon frequencies, significant enhancement of cross section occurs due to the quadrupole effects.

闯入

Threshold and Pseudothreshold Excitation of Molecules by Electron Impact,Threshold and pseudothreshold excitation of diatomic molecules are considered. In particular it is shown that certain geometrical factors, which suggest a preferential population of particular magnetic substates, can be separated from the excitation amplitudes. The case of excitation is discussed in detail.

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Correlation in Electron-Atom Excitation,ources of systematic error in experimental results with respect to determination of the correlation parameters λ and χ for helium are discussed. The results of several calculations are compared to the experimental data for the 2.P. state of helium.