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Effects of anisotropic electron-ion interactions in atomic photoelectron angular distributions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Starace, A. F. Dill, D. Manson, S. T. |
| Copyright Year | 1974 |
| Description | The photoelectron asymmetry parameter beta in LS-coupling is obtained as an expansion into contributions from alternative angular momentum transfers j sub t. The physical significance of this expansion of beta is shown to be that: (1) the electric dipole interaction transfers to the atom a charcteristic single angular momentum j sub t = sub o, where sub o is the photoelectron's initial orbital momentum; and (2) angular momentum transfers indicate the presence of anisotropic interaction of the outgoing photoelectron with the residual ion. For open shell atoms the photoelectron-ion interaction is generally anisotropic; photoelectron phase shifts and electric dipole matrix elements depend on both the multiplet term of the residual ion and the total orbital momentum of the ion-photoelectron final state channel. Consequently beta depends on the term levels of the residual ion and contains contributions from all allowed values of j sub t. Numerical calculations of the asymmetry parameters and partial cross sections for photoionization of atomic sulfur are presented. |
| File Size | 864889 |
| Page Count | 40 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740026077 |
| Archival Resource Key | ark:/13960/t7kq2s70n |
| Language | English |
| Publisher Date | 1974-01-01 |
| Access Restriction | Open |
| Subject Keyword | Physics, Atomic, Molecular, And Nuclear Momentum Transfer Anisotropy Electric Dipoles Angular Distribution Photoelectrons Atomic Structure Sulfur Ionization Cross Sections Electron-ion Recombination Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
