Post by account_disabled on Mar 13, 2024 20:34:25 GMT 12
Raman analysis is a non-destructive process that provides detailed information about the chemical composition of your liquid, solid or gas sample. A monochromatic laser in the visible, near-infrared, or near-ultraviolet range is used to illuminate a sample of unknown composition. The light excites the molecules of the substance, causing them to go from their basic vibratory state to a virtual vibratory state. During this process, elastic and inelastic dispersion of light occurs. Elastic scattering, or Rayleigh scattering, means that the released photons of light have the same amount of energy as the incident photons of light. Inelastic or Raman scattering refers to two cases: The first is that in which a molecule is excited to a virtual state and retains part of the absorbed light energy.
The emitted scattered light photon therefore has somewhat less energy than the incident photon and a longer wavelength. The second occurs when a molecule already excited to a higher vibrational state returns to its basic state after excitation. The emitted photons of light gain energy and have a shorter wavelength. The Raman spectrum created by the light scattering process is BYB Directory often described as the Raman fingerprint of a sample. Like our fingerprints, each Raman fingerprint is unique and is assigned a value or values based on mathematical models generated for measurement applications. Models can be generated by the user in a laboratory, but many manufacturers generate theoretical models to reduce implementation time.
In particular, accurate modeling and proper application of the models are vital to the accuracy of Raman measurement. Advantages of Raman Analyzers Raman spectroscopy offers an effective means to continuously monitor process status. You can check the chemical composition at each stage to help you ensure that processes run optimally. Repair operations and waste can be minimized as a well-designed Raman system allows for near-instant decisions based on analysis results. Raman spectroscopy can also monitor finished or near-finished products to minimize reprocessing of out-of-specification products.
The emitted scattered light photon therefore has somewhat less energy than the incident photon and a longer wavelength. The second occurs when a molecule already excited to a higher vibrational state returns to its basic state after excitation. The emitted photons of light gain energy and have a shorter wavelength. The Raman spectrum created by the light scattering process is BYB Directory often described as the Raman fingerprint of a sample. Like our fingerprints, each Raman fingerprint is unique and is assigned a value or values based on mathematical models generated for measurement applications. Models can be generated by the user in a laboratory, but many manufacturers generate theoretical models to reduce implementation time.
In particular, accurate modeling and proper application of the models are vital to the accuracy of Raman measurement. Advantages of Raman Analyzers Raman spectroscopy offers an effective means to continuously monitor process status. You can check the chemical composition at each stage to help you ensure that processes run optimally. Repair operations and waste can be minimized as a well-designed Raman system allows for near-instant decisions based on analysis results. Raman spectroscopy can also monitor finished or near-finished products to minimize reprocessing of out-of-specification products.