Table 3:
Polycrystalline indium,a Ref. [3].
Element
v
(Hz)
v
c
(Hz)
(Hz)
q
S
(µm)
In
1540
1566
2
1.06
OR Sn
1515
2
1.04
Cu
2830
2830
2
1.05
a
Chemical analysis: Cu 0.006%, Zn 0.01%, Sn 0.01%, Pb trace