Druck-Materie 20b.qxd - JUWEL - Forschungszentrum Jülich

intervals. Thus some excitation energies that are shown in Table 10 below are not seen in
Figure 6.
integrated S(Q,ω)
0.35
0.3
0.25
0.2
0.15
0.1
0.05
30 K 50 K 90 K
0
140 K 210 K
0 10 20 30 40 50 60 70 80
energy transfer ω (meV)
Figure 6. Angle-integrated S(Q,ω) over the energy transfer range 0-80 meV. Successive curves are
displaced vertically upwards by 0.05.
integrated S(Q,ω)
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
0 50 100 150 200 250
energy transfer ω (meV)
94
30 K 50 K 90 K
140 K 210 K
Figure 7. Angle-integrated S(Q,ω) over the energy transfer range 0-250 meV.
Table 10 summarizes the energy transfer spectral data from the references cited earlier,
as well as modes that could possible be identified from the present set of measurements. Our
data at higher Q (above about 250 meV) do not have good enough statistics to warrant
identification of individual lines.