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Figure 4
Dispersion relations of longitudinal acoustic excitations in Rb-IV at 17.3 GPa. The reduced wavevector q (parallel to the chains) refers to the reciprocal lattice of the host. The two branches are attributed to lattice excitations of the host (solid symbols) and the guest (open symbols), respectively. The inset shows the structure of Rb-IV. (Adapted from Loa et al., 2007BB19.)

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 16| Part 6| September 2009| Pages 707-713
doi:10.1107/S0909049509033743
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