Download or read book Time-Resolved Raman Spectrum of Shock-Compressed Diamond written by and published by . This book was released on 1989 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of spectroscopic measurements in shock wave experiments has increased considerably in recent years. These measurements compliment the continuum data obtained from wave profile measurements and have the potential to provide an understanding of shock compressed materials at the atomic/molecular level. The present work was motivated by a need to develop complementary methods for examining time-dependent structural changes at the atomic/molecular level in shocked crystals. Raman spectroscopy is well suited for this purpose. A method has been developed for time-resolved Raman measurements under shock loading to examine the first order Raman line of diamond (Omega(0) = 1333/cm). The diamond samples were subjected to uniaxial strain along the 110 direction to a longitudinal stress of 121 kbar. The observed spectral changes are consistent with frequency shifts calculated according to phenomenological model used to describe stress effects on the zone center phonons of cubic materials.