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 K	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 K 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 K 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 K 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 K 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(p_i(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).