Table 2 Metric parameters calculated from k3-weighted EXAFS spectra using a 3O-shell fitting procedure in comparison to simulated PuO2 oxide.

From: Insights into the sonochemical synthesis and properties of salt-free intrinsic plutonium colloids

Sample

Shell

N

(ΔN)

σ22)

(Δσ2)

R(Å)

(ΔR)

Simulated PuO2

 

Os

0.0

0.0

Om

8.0

0.0

2.34

0.01

Ol

0.0

0.0

Pu

12.0

0.0

3.81

0.01

O2

24.0

0.0

4.47

0.01

PuO2 485 °C

 

Os

2.2

0.3

0.005

0.002

2.19

0.01

Om

7.1

0.4

0.005

0.001

2.33

0.01

Ol

0

Pu

8.9

0.8

0.005

0.001

3.81

0.01

O2

13.9

3.3

0.007

0.002

4.45

0.02

Sonochemical colloid

 

Os

2.5

0.6

0.004

0.003

2.17

0.02

Om

7.2

0.7

0.004

0.001

2.32

0.01

Ol

0.3

1.0

0.010*

2.76

0.20

Pu

10.0

0.6

0.004

0.010

3.80

0.01

O2

9.5

1.7

0.010

0.002

4.44

0.03

Hydrolytic colloid

 

Os

4.5

1.2

0.007

0.003

2.24

0.02

Om

5.0

1.3

0.007

0.003

2.39

0.02

Ol

0.5

0.7

0.010*

3.02

0.25

Pu

4.6

0.4

0.005

0.002

3.80

0.01

O2

2.5

5.7

0.010*

4.47

0.25

  1. 0.5% < R-factor < 3%, 0.5 eV < ΔE0 < 2 eV, S02 = 0.9. *Fixed values.