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Raman spectroscopy: A tool to investigate alpha decay damage in a PuO 2 crystal lattice and determining sample age since calcination
Author(s) -
VillaAleman Eliel,
Houk Amanda L.,
Bridges Nicholas J.,
Shehee Thomas C.
Publication year - 2019
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5591
Subject(s) - raman spectroscopy , calcination , lattice constant , lattice (music) , analytical chemistry (journal) , materials science , diffraction , crystal structure , x ray crystallography , spectroscopy , plutonium , chemistry , crystallography , radiochemistry , optics , physics , biochemistry , chromatography , quantum mechanics , acoustics , catalysis
Raman microspectroscopy can be used to measure local physical properties of materials, such as the lattice parameter. Alpha decay induced lattice damage of plutonium dioxide (PuO 2 ) results in the growth of new bands and broadening of the T 2g band. A relationship between the change in the lattice parameter and storage time has been established in the literature using X‐ray diffraction (XRD). Our measured time‐dependent Raman spectra of PuO 2 particulates matches the XRD results. This new Raman spectroscopic technique can provide dating information on the time elapsed since the last calcination of PuO 2 using a single >5 μm particulate in contrast to 50 mg of 10–50 μm particles required by XRD.