Accession Number : ADA116899

Title :   Surface Raman Scattering from Effervescent Magnetic Peroxyborates.

Descriptive Note : Technical rept.,

Corporate Author : HOWARD UNIV WASHINGTON DC DEPT OF CHEMISTRY

Personal Author(s) : Walrafen,G E ; Krishnan,P N ; Griscom,D L ; Munro,R

PDF Url : ADA116899

Report Date : 30 Jun 1982

Pagination or Media Count : 38

Abstract : Surface Raman scattering using a spinning technique was investigated for solid NaBO3.4H2O and NaBO3.H2O as well as for electron bombarded peroxyborates heated for various times and at temperatures form 110-180 deg C, and for solid Na2O2 and BaO2. The Raman spectra indicate that the breakdown of peroxy groups is accompanied by the formation of trapped molecular O2. Quantitative Raman intensity data were also obtained as functions of heating time at 115 deg C for the 1556 cm-1 line from O2 and for the 890 and 705 cm-1 lines whose intensities scale with the peroxy concentration. These intensity data were treated by logistics theory, and they were found to be consistent with a second-order auto-catalyzed forward reaction dependent on the product of the peroxy and 02 concentrations, plus a first-order reverse reaction dependent only on the 02 concentration.

Descriptors :   *Magnetic properties, *Raman spectra, *Scattering, *Surfaces, Borates, Peroxides, Theory, Sodium compounds, Oxides, Oxygen, Molecules

Subject Categories : Electricity and Magnetism
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE