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Using strong electromagnetic fields to control x-ray processes
- Source :
- Rev. Mex. F\'is. S 56, 11-17 (2010)
- Publication Year :
- 2008
-
Abstract
- Exploration of a new ultrafast-ultrasmall frontier in atomic and molecular physics has begun. Not only is is possible to control outer-shell electron dynamics with intense ultrafast optical lasers, but now control of inner-shell processes has become possible by combining intense infrared/optical lasers with tunable sources of x-ray radiation. This marriage of strong-field laser and x-ray physics has led to the discovery of methods to control reversibly resonant x-ray absorption in atoms and molecules on ultrafast timescales. Using a strong optical dressing field, resonant x-ray absorption in atoms can be markedly suppressed, yielding an example of electromagnetically induced transparency for x rays. Resonant x-ray absorption can also be controlled in molecules using strong non-resonant, polarized laser fields to align the framework of a molecule, and therefore its unoccupied molecular orbitals to which resonant absorption occurs. At higher laser intensities, ultrafast field ionization produces an irreversible change in x-ray absorption. Finally, the advent of x-ray free electron lasers enables first exploration of non-linear x-ray processes.<br />Comment: 8 pages, 11 figures, RevTeX4, submitted to Revista Mexicana de Fisica
- Subjects :
- Physics - Atomic Physics
Physics - Chemical Physics
Physics - Optics
Subjects
Details
- Database :
- arXiv
- Journal :
- Rev. Mex. F\'is. S 56, 11-17 (2010)
- Publication Type :
- Report
- Accession number :
- edsarx.0809.3537
- Document Type :
- Working Paper