X-ray absorption spectroscopy set-up for unstable gases: A study of 5p hydrides

Publication date: Available online 1 February 2020Source: Radiation Physics and ChemistryAuthor(s): R. Hauko, J. Padežnik Gomilšek, A. Kodre, I. ArčonAbstractAn absorption cell is constructed for x-ray absorption spectroscopy of reactive, unstable or hazardous gases at room temperature. In conjunction with in-situ micro-synthesis technique relying on handling the gas in syringes it enabled a first measurement of x-ray absorption spectra in the region of K and L edges for the series of hydrides of 5p elements (SnH4, SbH3, TeH2, HI). The signal-to-noise ratio above 103 was achieved, whereby fine detail is discerned in the spectra, in particular the small sharp features above each absorption edge, testifying of coexcitations of outer electrons in the core photoeffect.

Source: Radiation Physics and Chemistry - February 2, 2020 Category: Physics Source Type: research