Accession Number : ADA113864

Title :   Chemical Structure by Laser-Produced X-Rays.

Descriptive Note : Final rept.,


Personal Author(s) : Schwerzel,R E ; Epstein,H M ; Mallozzi,P J ; Campbell,B E

PDF Url : ADA113864

Report Date : 02 Apr 1982

Pagination or Media Count : 61

Abstract : The research conducted under this grant has successfully proven the feasibility of using laser-produced x-rays to perform EXAFS experiments, and has led to the demonstration that well-resolved EXAFS spectra of light elements (such as aluminum and magnesium) can be obtained using a single multi-nanosecond pulse of laser-produced x-rays. In addition, this research has led to the development of the flash-EXAFS technique, in which the transient structural changes which occur upon thermal or optical excitation of a sample can be studied in real time (on a nanosecond time scale) by exploiting the short pulse characteristics of laser-EXAFS. It is realistic to say that an entirely new chapter in the history of structural analysis has been begun by this work, as the detailed structures of transient species can now be probed on a time scale never before possible. (Author)

Descriptors :   *Lasers, *X rays, *Absorption spectra, *Molecular structure, Transients, Structural analysis, Amorphous materials, Gases, Soft x rays, Synchrotrons, Radiation, Excitation, Optical pumping, Flashes

Subject Categories : Lasers and Masers
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE