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Low Frequency Raman Spectroscopy in Pharmaceutical Inspection

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Low Frequency Raman Spectroscopy in Pharmaceutical Inspection

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Recently there is also a lot of interest in accessing the low-frequency Raman spectroscopy region (<10 cm-1 to 200 cm-1). Raman shifts in this frequency range give access to lattice vibrations of molecular crystals and have the potential to more directly probe intermolecular interactions in solid materials. The low-frequency Raman region probes the same low-energy vibrational and rotational modes of molecular structures as terahertz spectroscopy (300 GHz – 6 THz). The THz region of Raman spectra contain important structural information about the molecules or crystal lattices under investigation.

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