Coherent Backscattering from Multiple Scattering Systems - KOPS ...

5.1 Conservation of energy in coherent backscattering
0.8
0.6
0.4
cooperon
1
0.5
0
theory
R700 data
0 30 60 90
scattering angle [deg]
a−1
a−2
NIX−2
NIX−3
R700
R700+gypsum
R900
R902
S−25
Ti−pure
approx. power ∫ α (A) dΩ
c
integrated cooperon E [sterad]
0.2
0
−0.2
−0.4
−0.6
cooperon
0.3
0.2
0.1
0
theory
R700 data
cooperon
0.4
0.2
0
theory
S−25 data
−0.2
0 30 60 90
scattering angle [deg]
−0.1
0 30 60 90
scattering angle [deg]
−0.8
0 2 4 6 8 10 12 14 16 18 20
kl*
Figure 5.8: Distribution of backscattered energies. The quality of the data varies
strongly. For the evaluation only data sets with E ≈ 0 can be used; data sets where
the backscattered power differs strongly from zero do not obey conservation of energy
and are distorted by experimental problems, as demonstrated by the insets. For the
errorbars an error of ±1% of the albedo mismatch was assumed in addition to the
measured variation of the data.
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