. Author manuscript; available in PMC: 2010 Dec 8.

Published in final edited form as: J Inorg Biochem. 2008 Sep 30;103(2):157–167. doi: 10.1016/j.jinorgbio.2008.09.008

Table 3.

Summary of the properties of the Mo x-ray absorption edges. The nominal energy refers to elemental Mo. The Mo partial cross sections are derived from the ENDF/B evaluated nuclear data library [50] and refer to the specific Mo sub-shell only. The fluorescence yield and natural linewidths are determined from published values using the cited references. The observed linewidth is that determined for MoO₄^2- and MoS₄^2- pre-edge structures as described in the text. The chemical shift is the energy difference of the MoO₄^2- and MoS₄^2- pre-edge structure centroids determined in this work.

Edge

Nominal Energy (eV)

Mo Partial Absorption Cross section σ (cm²/g)

O Total Cross section σ (cm²/g)

Fluorescence Yield ω

d^{*} = \frac{σ_{M_{o}}}{σ_{o}} \times ω

Natural Linewidth Γ (eV)

Observed Linewidth Γ_obs (eV)

Chemical Shift Δ (eV)

Natural Δ/Γ

Observed Δ/Γ_obs

K (1s)

20000.4

67.5

0.603

0.765

85.6

4.52

5.5

3.70

0.82

0.67

L₁ (2s)

2865.5

287

247

0.010

1.16E-02

3.80

L₂ (2p_1/2)

2625.1

669

317

0.034

7.18E-02

1.83

2.2

2.40

1.31

1.09

L₃ (2p_3/2)

2520.2

1410

396

0.037

0.132

1.69

2.2

2.35

1.39

1.07

M₁ (3s)

506.3

872

1430

3.6 × 10^-3

2.19E-03

6.3

M₂ (3p_1/2)

411.6

957

2380

2.0 × 10^-4

8.05E-05

2.1

2.2

2.08

0.99

0.95

M₃ (3p_3/2)

394.0

2460

2680

1.9 × 10^-4

1.75E-04

2.1

2.2

2.25

1.07

1.02

M₄ (3d_3/2)

231.1

630

9810

3.5 × 10^-3

2.25E-04

0.22

0.43

2.64

12.0

6.14

M₅ (3d_5/2)

227.9

904

1.01 × 10⁴

3.5 × 10^-3

3.13E-04

0.12

0.40

2.54

21.2

6.35

Reference

[53, 54]

[50]

[14, 15, 51, 52]

[13]

This work