High-energy chemical processes [electronic resource] : Laser irradiation of aromatic hydrocarbons
- Washington, D.C. : United States. Dept. of Energy, 1994. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 6 pages : digital, PDF file
- Additional Creators:
- Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Recent studies of the high-energy photochemical degradation of polycyclic aromatic hydrocarbons (PAHs) in solution have furthered our fundamental understanding of the way in which radiation interacts with matter. A new comprehensive mechanism that unifies many of the seemingly contradictory observations in radiation and photochemistry has been proposed on basis of evidence gathered using specialized techniques such as transient optical spectroscopy and transient dc conductivity. The PAH molecules were activated by two-photon ionization, and behavior of the transient ions were monitored as a function of photon energy. It was found that a greater percentage of ions retain sufficient energy to decompose when higher energy light was used. When these cations decompose they leave a trail of products that establish a ``high-energy`` decomposition pathway that involves proton transfer from the ion, a mechanism hitherto not considered in photoionization processes.
- Published through SciTech Connect., 03/01/1994., "anl/chm/pp--74944", "DE94008107", and Trifunac, A.D.; Liu, A.D.; Loffredo, D.M.
- Type of Report and Period Covered Note:
- Topical; 03/01/1994 - 03/01/1994
- Funding Information:
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