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Free-free transitions of the e-h system inside a dense plasma irradiated by a laser field at very low incident-electron energies
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sinha, C. Bhatia, A. K. |
| Copyright Year | 2012 |
| Description | The free-free transition is studied for an electron-hydrogen atom in ground state when a low-energy electron (external) is injected into hydrogenic plasma in the presence of an external homogenous, monochromatic, and linearly polarized laser field. The effect of plasma screening is considered in the Debye-Huckel approximation. The calculations are performed in the soft photon limit. The incident electron is considered to be dressed by the laser field in a nonperturbative manner by choosing the Volkov solutions in both the initial and final channels. The space part of the scattering wave function for the electron is solved numerically by taking into account the electron exchange. The laser-assisted differential and total cross sections are calculated for single-photon absorption or emission and no-photon exchange in the soft photon limit, the laser intensity being much less than the atomic field intensity. The calculations have been carried out for various values of Debye parameter, ranging from 0.005 to 0.12. A strong suppression is noted in the laser-assisted cross sections as compared to the field-free situation. A significant difference is noted for the singlet and triplet cross sections. The suppression is much more in the triplet states. |
| File Size | 209089 |
| Page Count | 9 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20130012842 |
| Archival Resource Key | ark:/13960/t9q28x26g |
| Language | English |
| Publisher Date | 2012-11-01 |
| Access Restriction | Open |
| Subject Keyword | Plasma Physics Laser Outputs Lasers Laser Plasma Interactions Plasmas Physics Scattering Hydrogen Atoms Electron Energy Bessel Functions Laser Applications Dense Plasmas Debye-huckel Theory Atomic Energy Levels Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
