Scattering Spectroscopy

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• Coherent Anti-Stokes Raman Scattering Microspectrometer
  Coherent Anti-Stokes Raman Scattering (CARS) was first reported in 1965 by Maker and Terhune1 as a method of spectroscopy for chemical analysis. The energy diagram of the process is depicted in Figure 1. CARS involve the interaction of four waves designated as pump (p), Stokes (s), probe (p...
• Dynamic Light Scattering
  Dynamic light scattering or photon correlation spectroscopy (PCS) is used to determine the sizes of hydrodynamic particles by measuring the speed at which these particles diffuse in a base liquid. The suspended particles, excited into diffusing by Brownean motion, are subjected to laser beams...
• Download our new white paper: a glossary of dynamic light scattering terms
  There are a number of sources of information that give a mathematical. description of the terms used in light scattering. However, these will. not usually give assistance in understanding their use in the practical. application of the technique. (Ref, 1,2,3,4,5,6). The following list of terms gives...
• Raman Spectroscopy
  of molecular vibrations. In Raman the electric field of light incident upon the molecule interacts with electric fields of this molecule. The non-linearity causes inelastic scattering of the light resulting in a change in frequency. This so called Raman shift depends quantitatively upon the energy levels...
• A Spectroscopy Guide for PAT
  > Spectrophotometric Identification Tests. <851> Spectrophotometry and Light-scattering. Work is ongoing on these chapters: <1038> Vibrational Spectroscopic Imaging. <1039> Chemometrics: Multivariate Analysis. Both of the above should appear at the end of 2008 or beginning of 2009 in the PF. Already...
• ELDS - Enhanced Laser Diode Spectroscopy
  is exacerbated by the fact that the amplitude of. any such modulation is dependant upon the field strength of a particular reflection or. scattering source, not upon the intensity of such a source. This means that amplitude. modulations of 1×10-5 can be produced by reflected or scattered light of 1×10-10...
• A Spectroscopy Guide for PAT
  By Emil W. Ciurczak, Contributing Editor Raman is quickly making itself known in PAT. In the past few years it has gone from a laboratory novelty to a hardened process tool. Its ability to ignore water allows for aqueous applications even more sensitive than NIR. Since it is based on scattering...
• A Spectroscopy Guide for PAT
  reported results on organic molecules. Later, when lasers became available, Raman spectroscopy became one more tool for characterization in organic synthesis. While actually not an absorption technique (it is based upon scattering of the light), the information gleaned allows it to be paired with infrared...
• REBECCA Provides a New Paradigm in Photoelectron Spectroscopy (.pdf)
  information on the. direction, speed and scattering process of valence electrons in the. sample. (See Figure 1.) ARPES is one of the most direct meth-. ods for studying the electronic structure of the surface of solids. Figure 1. Schematic of ARPES system. REBECCA. incentive for more detailed theoretical...
• Biotechnology Industry - Particle Characterization
  Biotechnology requires the use of a wide range of analytical techniques for rapid and accurate particle characterization. Light scattering techniques can be used to measure particle size, zeta potential (charge) and molecular weight. Biotechnology Industry - Particle Characterization. More...

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