Accession Number : ADA137531

Title :   Electronic Spectra of Condensed Phase under Shock Conditions.

Descriptive Note : Annual summary rept. 1 Jul 82-30 Jun 83,


Personal Author(s) : Duvall,G E

PDF Url : ADA137531

Report Date : Aug 1983

Pagination or Media Count : 50

Abstract : During the last 30 years a substantial amount of information has accumulated on non-explosive reaction in shock waves. It suggests that the effect of a shock wave in producing chemical reactions goes beyond the simple effects of pressure and temperature. There may be direct interaction between the shock front and the individual molecules which influences their chemical states. There are also large, heterogeneous electric fields and charge distributions in insulating solids, and probably in liquids too. These may be expected to be altered in the shock front and to contribute to the total reaction process. Plausible mechanisms of direct interaction between shock front and molecules include direct transfer of energy to particular modes, molecular deformation through impact, and torsion of large molecules. Research being conducted under this contract addresses the above problems directly using the best diagnostic technique presently available which is suited to the shock environment, viz., optical spectroscopy in the visible and UV regions. The subject material to date has been principally liquid carbon disulfide.

Descriptors :   *Shock waves, *Chemical reactions, *Carbon disulfide, *Electronic states, *Spectroscopy, Reaction kinetics, Compression, Phase, Interactions, Wavefronts, Molecules, Defects(Materials), Electric fields, Charge transfer, Energy transfer, Deformation, Impact, Torsion, Liquids, Sapphire, Interfaces, Films, Absorption spectra, Reflection, Equations of state

Subject Categories : Fluid Mechanics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE