A-4. K X-ray energies and intensities for actinides and natural decay products
Nuclide	Half-life 1 y = 1 year = 365.24219878 days	Decay	Origin	Energy   [keV]	Emission probabiliy   Px [% decay]	Source
81-Tl-206	4.202 ± 0.011 m	β-	Pb Kα2   Pb Kα1   Pb K'β1   Pb K'β2	72.8049   74.9700   84.451 - 85.470   87.238 - 88.003	0.026 ± 0.003    0.044 ± 0.005    0.0150 ± 0.0017    0.0045 ± 0.0006	[1]
81-Tl-208	3.060 ± 0.008 m	β-	Pb Kα2   Pb Kα1   Pb K'β1   Pb K'β2	72.8049   74.9700   84.451 - 85.470   87.238 - 88.003	2.15 ± 0.06   3.61 ± 0.09   1.23 ± 0.04   0.373 ± 0.013	[2]
82-Pb-212	10.64 ± 0.01 h	β-	Bi Kα2   Bi Kα1   Bi K'β1   Bi K'β2	74.8157   77.1088   86.835 - 87.862   89.732 - 90.522	10.7 ± 0.3   17.9 ± 0.5   6.12 ± 0.20   1.87 ± 0.07	[2]
83-Bi-212	60.54 ± 0.06 m	α             β-	Tl Kα2   Tl Kα1   Tl K'β1   Tl K'β2   Po Kα2   Po Kα1   Po K'β1   Po K'β2	70.8325   72.8725   82.118 - 83.115   84.838 - 85.530   76.864   79.293   89.256 - 90.363   92.263 - 93.095	0.0563 ± 0.0027   0.095 ± 0.005   0.0323 ± 0.0016   0.0096 ± 0.0005   0.0404 ± 0.0010   0.0672 ± 0.0017   0.0231 ± 0.0007   0.00720 ± 0.00024	[2]
88-Ra-224	3.627 ± 0.007 d	α	Rn Kα2   Rn Kα1   Rn K'β1   Rn K'β2	81.07   83.78   94.247 - 95.449   97.48 - 98.389	0.130 ± 0.004   0.215 ± 0.007   0.0744 ± 0.0024   0.0238 ± 0.0009	[2]
88-Ra-226	( 1.600 ± 0.007 ) x 103 y	α	Rn Kα2   Rn Kα1   Rn K'β1   Rn K'β2	81.07   83.78   94.247 - 95.449   97.48 - 98.389	0.191 ± 0.007    0.315 ± 0.011    0.109 ± 0.004    0.0349 ± 0.0014	[2]
89-Ac-224	2.78 ± 0.17 h	α             EC	Fr Kα2   Fr Kα1   Fr K'β1   Fr K'β2   Ra Kα2   Ra Kα1   Ra K'β1   Ra K'β2	83.231   86.105   96.815 - 98.069   100.16 - 101.118   85.43   88.47   99.432 - 100.738   102.89 - 103.899	0.150 ± 0.015   0.247 ± 0.023   0.087 ± 0.009   0.028 ± 0.003   22.2 ± 0.8   36.2 ± 1.2   12.8 ± 0.5   4.22 ± 0.16	[3]
89-Ac-228	6.15 ± 0.02 h	β-	Th Kα2   Th Kα1   Th K'β1   Th K'β2	89.954   93.351   104.819 - 106.239   108.509 - 109.630	1.92 ± 0.19   3.1 ± 0.3   1.11 ± 0.11   0.37 ± 0.04	[3]
90-Th-227	18.718 ± 0.005 d	α	Ra Kα2   Ra Kα1   Ra K'β1   Ra K'β2	85.43   88.47   99.432 - 100.738   102.89 - 103.899	1.81 ± 0.06    2.96 ± 0.10    1.04 ± 0.04    0.340 ± 0.013	[2]
90-Th-228	698.60 ± 0.23 d	α	Ra Kα2   Ra Kα1   Ra K'β1   Ra K'β2	85.43   88.47   99.432 - 100.738   102.89 - 103.899	0.0172 ± 0.0008   0.0281 ± 0.0012   0.0098 ± 0.0005   0.00323 ± 0.00016	[2]
90-Th-231	25.52 ± 0.01 h	β-	Pa Kα2   Pa Kα1   Pa K'β1   Pa K'β2	92.288   95.869   107.595 - 109.072   111.405 - 112.575	0.37 ± 0.05   0.60 ± 0.07   0.216 ± 0.026   0.073 ± 0.009	[3]
90-Th-233	22.15 ± 0.15 m	β-	Pa Kα2   Pa Kα1   Pa K'β1   Pa K'β2	92.288   95.869   107.595 - 109.072   111.405 - 112.575	0.48 ± 0.05   0.78 ± 0.08   0.28 ± 0.03   0.095 ± 0.010	[4]
91-Pa-231	( 3.276 ± 0.011 ) x 104 y	α	Ac Kα2   Ac Kα1   Ac K'β1   Ac K'β2	87.768   90.885   102.101 - 103.462   105.679 - 106.738	0.75 ± 0.04   1.22 ± 0.06   0.435 ± 0.022   0.145 ± 0.008	[3]
91-Pa-232	1.32 ± 0.02 d	β-	U Kα2   U Kα1   U K'β1   U K'β2	94.666   98.440   110.421 - 111.964   114.407 - 115.580	1.06 ± 0.04   1.70 ± 0.06   0.613 ± 0.023   0.210 ± 0.009	[3]
91-Pa-233	26.98 ± 0.02 d	β-	U Kα2   U Kα1   U K'β1   U K'β2	94.666   98.440   110.421 - 111.964   114.407 - 115.580	9.09 ± 0.25   14.6 ± 0.4   5.25 ± 0.21   1.80 ± 0.08	[1]
91-Pa-234	6.70 ± 0.05 h	β-	U Kα2   U Kα1   U K'β1   U K'β2	94.666   98.440   110.421 - 111.964   114.407 - 115.580	12.3 ± 0.8   19.7 ± 1.2   7.1 ± 0.5   2.43 ± 0.16	[3]
92-U-233	( 1.592 ± 0.002 ) x 105 y	α	Th Kα2   Th Kα1   Th K'β1   Th K'β2	89.954   93.351   104.819 - 106.239   108.509 - 109.630	0.00810 ± 0.00022   0.0131 ± 0.0003   0.00469 ± 0.00012   0.00158 ± 0.00005	[3]
92-U-235	( 7.038 ± 0.005 ) x 108 y	α	Th Kα2   Th Kα1   Th K'β1   Th K'β2	89.954   93.351   104.819 - 106.239   108.509 - 109.630	3.46 ± 0.09   5.60 ± 0.12   2.00 ± 0.05   0.675 ± 0.018	[3]
92-U-237	6.749 ± 0.016 d	β-	Np Kα2   Np Kα1   Np K'β1   Np K'β2	97.069   101.059   113.303 - 114.912   117.463 - 118.646	14.7 ± 0.4   23.4 ± 0.6   8.50 ± 0.27   2.92 ± 0.10	[1]
93-Np-236	( 1.55 ± 0.08 ) x 105 y	EC	U Kα2   U Kα1   U K'β1   U K'β2	94.666   98.440   110.421 - 111.964   114.407 - 115.580	20.2 ± 0.3   32.4 ± 0.5   11.68 ± 0.25   3.99 ± 0.11	[1]
93-Np-237	( 2.144 ± 0.007 ) x 106 y	α	Pa Kα2   Pa Kα1   Pa K'β1   Pa K'β2	92.288   95.869   107.595 - 109.072   111.405 - 112.575	1.67 ± 0.10   2.68 ± 0.14   0.96 ± 0.06   0.327 ± 0.018	[3]
93-Np-238	2.117 ± 0.002 d	β-	Pu Kα2   Pu Kα1   Pu K'β1   Pu K'β2	99.525   103.734   116.244 - 117.918   120.540 - 121.768	0.172 ± 0.009   0.272 ± 0.013   0.099 ± 0.005   0.034 ± 0.002	[5]
93-Np-239	2.356 ± 0.003 d	β-	Pu Kα2   Pu Kα1   Pu K'β1   Pu K'β2	99.525   103.734   116.244 - 117.918   120.540 - 121.768	14.0 ± 0.6   22.2 ± 0.8   8.1 ± 0.4   2.80 ± 0.11	[3]
94-Pu-239	( 2.411 ± 0.003 ) x 104 y	α	U Kα2   U Kα1   U K'β1   U K'β2	94.666   98.440   110.421 - 111.964   114.407 - 115.580	0.0036 ± 0.0004   0.0058 ± 0.0005   0.00209 ± 0.00019   0.00072 ± 0.00007	[3]
94-Pu-241	14.290 ± 0.006 y	α	U Kα2   U Kα1   U K'β1   U K'β2	94.666   98.440   110.421 - 111.964   114.407 - 115.580	0.000312 ± 0.000011   0.000499 ± 0.000017   0.000180 ± 0.000007   0.0000615 ± 0.0000023	[3]
95-Am-241	432.6 ± 0.6 y	β-	Np Kα2   Np Kα1   Np K'β1   Np K'β2	97.069   101.059   113.303 - 114.912   117.463 - 118.646	0.00116 ± 0.00002   0.00185 ± 0.00004   0.000670 ± 0.000014   0.000231 ± 0.000005	[2]
95-Am-242	16.02 ± 0.02 h	EC	Pu Kα2   Pu Kα1   Pu K'β1   Pu K'β2	99.525   103.734   116.244 - 117.918   120.540 - 121.768	3.6 ± 0.3   5.7 ± 0.4   2.07 ± 0.15   0.72 ± 0.06	[3]
96-Cm-243	29.1 ± 0.1 y	α	Pu Kα2   Pu Kα1   Pu K'β1   Pu K'β2	99.525   103.734   116.244 - 117.918   120.540 - 121.768	13.2 ± 0.6   20.9 ± 0.8   7.6 ± 0.4   2.64 ± 0.11	[3]

 

References
BIPM-5	M.-M. Bé, V. Chisté, C. Dulieu, E. Browne, V. Chechev, N. Kuzmenko, R. Helmer, A. Nichols, E. Schönfeld, R. Dersch, Monographie BIPM-5, Table of Radionuclides, Vol. 2 - A = 151 to 242, 2004.
ENSDF	Evaluated Nuclear Structure Data File, http://www-nds.iaea.org/ensdf/, 25 Octorer 2006.
LNHB	Laboratoire National Henri Becquerel, Recommended Data, http://www.nucleide.org/DDEP_WG/DDEPdata.htm, 3 October 2006.
PTB	E. Schönfeld, G. Rodloff, Energies and relative emission probabilities of K X-rays for elements with atomic number in the range from Z = 5 to Z = 100, Report PTB-6.11-1999-1,1999.

 

Notes

[1] X-ray energies adopted from PTB. Emission probabilities adopted from LNHB; the values listed in LNHB are consistent with the relative X-ray emission probabilities reported in PTB. [2] X-ray energies adopted from PTB. Emission probabilities adopted from BIPM-5 - the values listed in BIPM-5 are consistent with the relative X-ray emission probabilities reported in PTB. [3] X-ray energies adopted from PTB. Emission probabilities are calculated from the relative X-ray emission probabilities listed in PTB and the absolute Kα1-emission probability given in the ENSDF database. [4] X-ray energies adopted from PTB. Emission probabilities reported without uncertainties were adopted from LNHB. There are no precise measurements of Px available in the literature for Th-233 and known experimental data without uncertainties are based on unpublished work; under these circumstances an uncertainty of ~10% was adopted for Px values. [5] X-ray energies adopted from PTB. Emission probabilities are not listed by NuDat2; therefore, the Kα1-emission probability was directly taken from the ENSDF file. The remaining X-ray emission probabilities were calculated from the relative X-ray emission probabilities listed in PTB and the absolute Kα1-emission probability extracted from the ENSDF database.

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