X-ray absorption coefficients of the Elements

  1A 2A 3A 4A 5A 6A 7A 8 8 8 1B 2B 3B 4B 5B 6B 7B 0
1 1,
H
                                2,
He
2
wide
3,
LI
4,
BE
                    5,
B
6,
C
7,
N
8,
O
9,
F
10,
NE
3
wide
K
11,
NA
12,
MG
9.51220
                    13,
AL
7.94813
14,
SI
6.73800
15,
P
5.78400
16,
S
5.01850
17,
CL
4.39710
18,
AR
3.87090
4
wide
19,
K
3.43650
20,
CA
3.07030
21,
SC
2.76200
22,
TI
2.49734
23,
V
2.26910
24,
CR
2.07020
25,
MN
1.89643
26,
FE
1.74346
27,
CO
1.60815
28,
NI
1.48807
29,
CU
1.38059
30,
ZN
1.28340
31,
GA
1.19580
32,
GE
1.11658
33,
AS
1.04500
34,
SE
0.97974
35,
BR
0.92040
36,
KR
0.86552
5
wide

L1
L2
L3
37,
RB
0.81554
38,
SR
0.76973
 
39,
Y
0.72766
 
40,
ZR
0.68883
 
41,
NB
0.65298
 
42,
MO
0.61978
 
43,
TC
0.58906
 
44,
RU
0.56051
 
45,
RH
0.53395
 
46,
PD
0.50920
 
47,
AG
0.48589
3.25640
3.51640
3.69990
48,
CD
0.46407
3.08490
3.32570
3.50470
49,
IN
0.44371
2.92600
3.14730
3.32370
50,
SN
0.42467
2.77690
2.98230
3.15570
51,
SB
0.40668
2.63880
2.82940
3.00030
52,
TE
0.38974
2.50990
2.68790
2.85550
53,
I
0.37381
2.38800
2.55420
2.71960
54,
XE
0.35840
2.27370
2.42920
2.59260
6
wide

L1
L2
L3
55,
CS
0.34451
2.16730
2.31390
2.47400
56,
BA
0.33104
2.06780
2.20480
2.36290
57-71,
Lanthanide
72,
HF
0.18982
1.09970
1.15480
1.29720
73,
TA
0.18394
1.06130
1.11370
1.25530
74,
W
0.17837
1.02467
1.07450
1.21550
75,
RE
0.17302
0.98940
1.03710
1.17730
76,
OS
0.16787
0.95580
1.00140
1.14080
77,
IR
0.16292
0.92360
0.96710
1.10580
78,
PT
0.15818
0.89310
0.93414
1.07230
79,
AU
0.15359
0.86376
0.90259
1.04000
80,
HG
0.14918
0.83530
0.87220
1.00910
81,
TL
0.14495
0.80810
0.84340
0.97930
82,
PB
0.14088
0.78196
0.81538
0.95073
83,
BI
0.13694
0.75710
0.78870
0.92340
84, 85, 86,
7 87, 88, 89-103,
Actinide
104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118,
57-71
wide

L1
L2
L3
57,
LA
0.31844
1.97800
2.10530
2.26100
58,
CE
0.30648
1.89340
2.01240
2.16600
59,
PR
0.29518
1.81410
1.92550
2.07910
60,
ND
0.28453
1.73900
1.84400
1.99670
61,
PM
0.27431
1.66740
1.76760
1.91910
62,
SM
0.26464
1.60020
1.69530
1.84570
63,
EU
0.25553
1.53810
1.62710
1.77610
64,
GD
0.24681
1.47840
1.56320
1.71170
65,
TB
0.23841
1.42230
1.50230
1.64970
66,
DY
0.23048
1.36920
1.44450
1.59160
67,
HO
0.22291
1.31900
1.39050
1.53680
68,
ER
0.21567
1.27060
1.33860
1.48350
69,
TM
0.20880
1.22500
1.28920
1.43340
70,
YB
0.20224
1.18180
1.24280
1.38620
71,
LU
0.19585
1.14020
1.19850
1.34050
89-103,
wide

L1
L2
L3
      92,
U
0.10723
0.56950
0.59190
0.72226
                     

S. Sasaki (1990) KEK Report 90-16.
This web page was constructed by T. Hanashima in 2001.

Linear absorption coefficient
Linear absorption coefficient of materials defined by Eq (1).
        I=I0 exp(-ux)                                                    (1)
M A for the database is a atomic absorption coefficient for a crystal.Using the atomic absorption coefficient for a crystal, we have
        u=z sum(M A)i/(V10-24)                                (8)
where z is a chemical unit, V is the cell volume in Angstrom unit,and the summation is taken over the constituent elements in the chemical formula. For an exaple of tetragonal Tl2CaBa2Cu2O8 (z=2,V=435A3) at the wavelength =0.5A, the linear-absorption coefficient is calculated as u=196(cm-1).
  Furthermore, the linear-absorption coefficient, u, can be calculated from M/R as:
        u=d sum(pi(M/R)i)                                            (9)
where d is the density (g/cm3) of the material,pi is the fractional part(by weight) of the constituent elements of the compound, and the summation is taken over all elements. The u value of the tungsten having the density of 19.24 g/cm3 is calculated at wavelength=0.5 A as u=~687 (cm-1).