Open AccessLiquid Rb micrometric droplets confined in paraffin wax: an X‐ray absorption spectroscopy study
Author(s) -
De Panfilis Simone,
Di Cicco Andrea,
Filipponi Adriano,
Comez Lucia,
Borowski Michael
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049500016204
Subject(s) - rubidium , absorption (acoustics) , spectroscopy , range (aeronautics) , materials science , supercooling , diffraction , absorption spectroscopy , neutron diffraction , analytical chemistry (journal) , liquid nitrogen , chemistry , optics , physics , thermodynamics , potassium , organic chemistry , chromatography , quantum mechanics , metallurgy , composite material
We have performed high‐quality X‐ray absorption measurements on crystalline ( c ‐Rb) and liquid ( l ‐Rb) Rubidium in the range from 15 K to 320 K. Performing a consistent analysis that takes into account the contribution of the medium range structure, we observe that the l ‐Rb spectrum is compatible with pair correlation function g ( r ) previously determined by neutron diffraction experiments. Due to the micrometric size of the liquid droplets we were able to observe a slight undercooling down to 290 K. We were also able to study the details of the very strong multielectron excitations channels in terms of resonances, edges and shake‐off features at proper theoretical energy values.