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TABLE 3. Recommended gamma-ray energies and emission probabilities ordered by radionuclide Data uncertainties are defined as standard deviations corresponding to the 1σ confidence level.

Nuclide	Energy (keV)		Emission Probability per decay		Comments
	Eγ	uncertainty	Pγ	uncertainty

11-Na-22	511	-	1.798	± 0.002	annihilation radiation
	1274.537	± 0.003	0.99940	± 0.00014

11-Na-24	1368.626	± 0.005	0.999935	± 0.000005
	2754.007	± 0.011	0.99872	± 0.00008

19-K-40	1460.822	± 0.006	0.1066	± 0.0013

21-Sc-46	889.271	± 0.002	0.999833	± 0.000005
	1120.537	± 0.003	0.99986	+ 0.00004 - 0.00036

24-Cr-51	320.0835	± 0.0004	0.0987	± 0.0005

25-Mn-54	834.838	± 0.005	0.999746	± 0.000011

25-Mn-56	846.7638	± 0.0019	0.9885	± 0.0003
	1810.726	± 0.004	0.269	± 0.004
	2113.092	± 0.006	0.142	± 0.003
	2523.06	± 0.05	0.0102	± 0.0002

26-Fe-59	142.651	± 0.002	0.00972	± 0.00015
	192.349	± 0.005	0.0292	± 0.0003
	1099.245	± 0.003	0.5659	± 0.0021
	1291.590	± 0.006	0.4321	± 0.0025


27-Co-56	846.7638	± 0.0019	0.999399	± 0.000023
	977.363	± 0.004	0.01422	± 0.00007
	1037.8333	± 0.0024	0.1403	± 0.0005
	1175.0878	± 0.0022	0.02249	± 0.00009
	1238.2736	± 0.0022	0.6641	± 0.0016
	1360.196	± 0.004	0.04280	± 0.00013
	1771.327	± 0.003	0.1545	± 0.0004
	2015.176	± 0.005	0.03017	± 0.00014
	2034.752	± 0.005	0.07741	± 0.00013
	2598.438	± 0.004	0.1696	± 0.0004
	3009.559	± 0.004	0.01038	± 0.00019
	3201.930	± 0.011	0.03203	± 0.00013
	3253.402	± 0.005	0.0787	± 0.0003
	3272.978	± 0.006	0.01855	± 0.00009
	3451.119	± 0.004	0.00942	± 0.00006

27-Co-57	14.41295	± 0.00031	0.0915	± 0.0017
	122.06065	± 0.00012	0.8551	± 0.0006
	136.47356	± 0.00029	0.1071	± 0.0015

27-Co-58	511	-	0.300	± 0.004	annihilation radiation
	810.759	± 0.002	0.9945	± 0.0001

27-Co-60	1173.228	± 0.003	0.9985	± 0.0003
	1332.492	± 0.004	0.999826	± 0.000006

29-Cu-64	511	-	0.3572	± 0.0028	annihilation radiation
	1345.77	± 0.16	0.00475	± 0.00010

30-Zn-65	511	-	0.0284	± 0.0004	annihilation radiation
	1115.539	± 0.002	0.5060	± 0.0022

31-Ga-66	833.5324	± 0.0021	0.059	± 0.005
	1039.220	± 0.003	0.37	± 0.03
	1333.112	± 0.005	0.0117	± 0.0009
	1418.754	± 0.005	0.0061	± 0.0005
	1508.158	± 0.007	0.0055	± 0.0004
	1898.823	± 0.008	0.0039	± 0.0003
	1918.329	± 0.005	0.0199	± 0.0016
	2189.616	± 0.006	0.053	± 0.004
	2422.525	± 0.007	0.0188	± 0.0015
	2751.835	± 0.005	0.227	± 0.018
	3228.800	± 0.006	0.0151	± 0.0012
	3380.850	± 0.006	0.0146	± 0.0012
	3422.040	± 0.008	0.0086	± 0.0007
	3791.004	± 0.008	0.0109	± 0.0009
	4085.853	± 0.009	0.0127	± 0.0010
	4295.187	± 0.010	0.038	± 0.003
	4461.202	± 0.009	0.0084	± 0.0007
	4806.007	± 0.009	0.0186	± 0.0015

31-Ga-67	91.265	± 0.005	0.0307	± 0.0011
	93.310	± 0.005	0.378	± 0.009
	184.576	± 0.010	0.209	± 0.007
	208.950	± 0.010	0.0237	± 0.0008
	300.217	± 0.010	0.168	± 0.006
	393.527	± 0.010	0.0466	± 0.0016


31-Ga-68	511	-	1.7828	± 0.0022	annihilation radiation
	1077.34	± 0.05	0.0322	± 0.0003

34-Se-75	66.0518	± 0.0008	0.01112	± 0.00012
	96.7340	± 0.0009	0.0342	± 0.0003
	121.1155	± 0.0011	0.172	± 0.003
	136.0001	± 0.0006	0.582	± 0.007
	198.6060	± 0.0012	0.0148	± 0.0004
	264.6576	± 0.0009	0.589	± 0.003
	279.5422	± 0.0010	0.2499	± 0.0013
	303.9236	± 0.0010	0.01316	± 0.00008
	400.6572	± 0.0008	0.1147	± 0.0009

36-Kr-85	513.997	± 0.005	0.00435	± 0.00010

38-Sr-85	514.0048	± 0.0022	0.985	± 0.004

39-Y-88	898.036	± 0.004	0.9390	± 0.0023
	1836.052	± 0.013	0.9938	± 0.0003

41-Nb-93m	30.77	± 0.02	(5.59^-9	± 0.16) 10^-6

41-Nb-94	702.639	± 0.004	0.99815	± 0.00006
	871.114	± 0.003	0.99892	± 0.00003

41-Nb-95	765.803	± 0.006	0.99808	± 0.00007

42-Mo-99/43-Tc-99m	40.58323	± 0.00017	0.01022	± 0.00027
	140.511	± 0.001	0.896	± 0.017
	181.094	± 0.002	0.0601	± 0.0011
	366.421	± 0.015	0.01194	± 0.00023
	739.500	± 0.017	0.1212	± 0.0015
	777.921	± 0.020	0.0428	± 0.0008

43-Tc-99m	140.511	± 0.001	0.885	± 0.002
	142.683	± 0.001	0.00023	± 0.00002

44-Ru-103	39.760	± 0.010	0.00071	± 0.00003
	53.275	± 0.010	0.00384	± 0.00006
	294.98	± 0.02	0.00289	± 0.00006
	443.80	± 0.02	0.00344	± 0.00003
	497.08	± 0.02	0.9131	± 0.0007
	557.04	± 0.02	0.00855	± 0.00005
	610.33	± 0.02	0.0578	± 0.0003

44-Ru-106/45-Rh 106	511.8534	± 0.0023	0.2050	± 0.0021
	616.22	± 0.09	0.00724	± 0.00013
	621.93	± 0.06	0.0986	± 0.0011
	873.49	± 0.05	0.00435	± 0.00008
	1050.41	± 0.06	0.01488	± 0.00022
	1128.07	± 0.05	0.00399	± 0.00006

47-Ag-110m	446.812	± 0.003	0.0365	± 0.0005	with ¹¹⁰Ag
	620.3553	± 0.0017	0.0272	± 0.0008	with ¹¹⁰Ag
	657.7600	± 0.0011	0.9438	± 0.0008	with ¹¹⁰Ag
	677.6217	± 0.0012	0.1056	± 0.0006	with ¹¹⁰Ag
	687.0091	± 0.0018	0.0645	± 0.0003	with ¹¹⁰Ag
	706.6760	± 0.0015	0.1648	± 0.0008	with ¹¹⁰Ag
	744.2755	± 0.0018	0.0471	± 0.0003	with ¹¹⁰Ag
	763.9424	± 0.0017	0.2231	± 0.0009	with ¹¹⁰Ag
	818.0244	± 0.0018	0.0733	± 0.0004	with ¹¹⁰Ag
	884.6781	± 0.0013	0.740	± 0.012	with ¹¹⁰Ag
	937.483	± 0.003	0.3451	± 0.0027	with ¹¹⁰Ag
	1384.2931	± 0.0020	0.247	± 0.005	with ¹¹⁰Ag
	1475.7792	± 0.0023	0.0403	± 0.0005	with ¹¹⁰Ag
	1505.0280	± 0.0020	0.1316	± 0.0016	with ¹¹⁰Ag
	1562.294	± 0.018	0.0121	± 0.0003	with ¹¹⁰Ag

48-Cd-109	88.0336	± 0.0011	0.03626	± 0.00020

49-In-111	171.28	± 0.03	0.9066	± 0.0025
	245.35	± 0.04	0.9409	± 0.0006

50-Sn-113	255.134	± 0.010	0.0211	± 0.0008
	391.698	± 0.003	0.6494	± 0.0017

51-Sb-125	176.314	± 0.002	0.0682	± 0.0007
	380.452	± 0.008	0.01520	± 0.00015
	427.874	± 0.004	0.2955	± 0.0024
	463.365	± 0.004	0.1048	± 0.0009
	600.597	± 0.002	0.1776	± 0.0018
	606.713	± 0.003	0.0502	± 0.0005
	635.950	± 0.003	0.1132	± 0.0010
	671.441	± 0.006	0.01783	± 0.00016

52-Te-123m	158.97	± 0.05	0.8399	± 0.0008

53-I-123	158.97	± 0.05	0.8325	± 0.0021
	528.96	± 0.05	0.0132	± 0.0008

53-I-125	35.4919	± 0.0005	0.0667	± 0.0017

53-I-129	39.578	± 0.004	0.0742	± 0.0008

53-I-131	80.1850	± 0.0019	0.02607	± 0.00027
	284.305	± 0.005	0.0606	± 0.0006
	364.489	± 0.005	0.812	± 0.008
	636.989	± 0.004	0.0726	± 0.0008
	722.911	± 0.005	0.01796	± 0.00020

55-Cs-134	563.243	± 0.003	0.0837	± 0.0003
	569.327	± 0.003	0.1538	± 0.0004
	604.720	± 0.003	0.97650	± 0.00018
	795.83	± 0.03	0.855	± 0.003
	801.945	± 0.004	0.0870	± 0.0003
	1365.186	± 0.004	0.03017	± 0.00012

55-Cs-137	661.657	± 0.003	0.8499	± 0.0020

56-Ba-133	53.1622	± 0.0006	0.0214	± 0.0003
	79.6142	± 0.0012	0.0265	± 0.0005
	80.9979	± 0.0011	0.329	± 0.003
	276.3989	± 0.0012	0.0716	± 0.0005
	302.8508	± 0.0005	0.1834	± 0.0013
	356.0129	± 0.0007	0.6205	± 0.0019
	383.8485	± 0.0012	0.0894	± 0.0006

58-Ce-139	165.8575	± 0.0011	0.7990	± 0.0004

58-Ce-141	145.4433	± 0.0014	0.4829	± 0.0020

58-Ce-144/59-Pr-144	33.568	± 0.010	0.00235	± 0.00012	¹⁴⁴Ce
	40.98	± 0.10	0.0041	± 0.0025	¹⁴⁴Ce
	80.12	± 0.05	0.0152	± 0.0010	¹⁴⁴Ce
	133.515	± 0.004	0.1109	± 0.0016	¹⁴⁴Ce
	696.505	± 0.004	0.01342	± 0.00014	¹⁴⁴Pr - per ¹⁴⁴Ce decay
	1489.148	± 0.003	0.00296	± 0.00005	¹⁴⁴Pr - per ¹⁴⁴Ce decay
	2185.645	± 0.005	0.00680	± 0.00018	¹⁴⁴Pr - per ¹⁴⁴Ce decay

62-Sm-153	69.67301	± 0.00018	0.0473	± 0.0003
	83.36716	± 0.00017	0.00192	± 0.00007
	89.48593	± 0.00021	0.00158	± 0.00015
	97.43095	± 0.00017	0.00772	± 0.00018
	103.18007	± 0.00013	0.293	± 0.003
	172.85295	± 0.00021	0.000737	± 0.000020

63-Eu-152	121.7817	± 0.0003	0.2841	± 0.0013	ε : gamma emissions arise from electron-capture decay mode
	244.6974	± 0.0008	0.0755	± 0.0004	ε : gamma emissions arise from electron-capture decay mode
	344.2785	± 0.0012	0.2658	± 0.0012	β^- : gamma emissions arise from β decay mode
	411.1165	± 0.0012	0.02237	± 0.00010	β^- : gamma emissions arise from β decay mode
	443.965	± 0.003	0.03125	± 0.00014	ε : gamma emissions arise from electron-capture decay mode
	778.9045	± 0.0024	0.1296	± 0.0006	β^- : gamma emissions arise from β decay mode
	867.380	± 0.003	0.04241	± 0.00023	ε : gamma emissions arise from electron-capture decay mode
	964.072	± 0.018	0.1462	± 0.0006	ε : gamma emissions arise from electron-capture decay mode
	1085.837	± 0.010	0.1013	± 0.0006	ε : gamma emissions arise from electron-capture decay mode
	1089.737	± 0.005	0.01731	± 0.00010	β^- : gamma emissions arise from β decay mode
	1112.076	± 0.003	0.1340	± 0.0006	ε : gamma emissions arise from electron-capture decay mode
	1212.948	± 0.011	0.01415	± 0.00009	ε : gamma emissions arise from electron-capture decay mode
	1299.142	± 0.008	0.01632	± 0.00009	β^- : gamma emissions arise from β decay mode
	1408.013	± 0.003	0.2085	± 0.0009	ε : gamma emissions arise from electron-capture decay mode

63-Eu-154	123.0706	± 0.0009	0.404	± 0.005
	247.9288	± 0.0007	0.0689	± 0.0007
	591.755	± 0.003	0.0495	± 0.0005
	692.4205	± 0.0018	0.0179	± 0.0003
	723.3014	± 0.0022	0.2005	± 0.0021
	756.8020	± 0.0023	0.0453	± 0.0005
	873.1834	± 0.0023	0.1217	± 0.0012
	996.262	± 0.006	0.1050	± 0.0010
	1004.725	± 0.007	0.1785	± 0.0017
	1246.121	± 0.004	0.00862	± 0.00008
	1274.429	± 0.004	0.349	± 0.003
	1596.4804	± 0.0028	0.01783	± 0.00017

63-Eu-155	26.531	± 0.021	0.00316	± 0.00022
	45.2990	± 0.0010	0.0131	± 0.0005
	60.0086	± 0.0010	0.0122	± 0.0005
	86.0591	± 0.0010	0.00154	± 0.00017
	86.5479	± 0.0010	0.307	± 0.003
	105.3083	± 0.0010	0.211	± 0.006

67-Ho-166	80.576	± 0.002	0.0655	± 0.0008
	1379.437	± 0.006	0.00933	± 0.00016
	1581.833	± 0.007	0.00186	± 0.00004
	1662.439	± 0.006	0.00118	± 0.00005

67-Ho-166m	80.5725	± 0.0013	0.1266	± 0.0023
	184.4107	± 0.0011	0.725	± 0.005
	215.871	± 0.007	0.0266	± 0.0017
	259.736	± 0.010	0.01078	± 0.00010
	280.4630	± 0.0023	0.2954	± 0.0025
	300.741	± 0.003	0.0373	± 0.0004
	365.768	± 0.006	0.0246	± 0.0004
	410.956	± 0.003	0.1135	± 0.0018
	451.540	± 0.004	0.02915	± 0.00014
	464.798	± 0.006	0.0125	± 0.0004
	529.825	± 0.004	0.094	± 0.004
	570.995	± 0.005	0.0543	± 0.0020
	611.579	± 0.006	0.0131	± 0.0021
	670.526	± 0.004	0.0534	± 0.0021
	691.253	± 0.007	0.0132	± 0.0007
	711.697	± 0.003	0.549	± 0.012
	752.280	± 0.004	0.122	± 0.003
	810.286	± 0.004	0.573	± 0.011
	830.565	± 0.004	0.0972	± 0.0018
	950.988	± 0.004	0.02744	± 0.00019

69-Tm-170	78.59	± 0.02	0.000034	± 0.000003
	84.25474	± 0.00008	0.0248	± 0.0009

70-Yb-169	63.12044	± 0.00004	0.4405	± 0.0024
	93.61447	± 0.00008	0.02571	± 0.00017
	109.77924	± 0.00004	0.1736	± 0.0009
	118.18940	± 0.00014	0.01870	± 0.00010
	130.52293	± 0.00006	0.1138	± 0.0005
	177.21307	± 0.00006	0.2232	± 0.0010
	197.95675	± 0.00007	0.3593	± 0.0012
	261.07712	± 0.00009	0.01687	± 0.00008
	307.73586	± 0.00010	0.10046	± 0.00045

77-Ir-192	205.79430	± 0.00009	0.0334	± 0.0004
	295.95650	± 0.00015	0.2872	± 0.0014
	308.45507	± 0.00017	0.2968	± 0.0015
	316.50618	± 0.00017	0.8275	± 0.0021
	468.06885	± 0.00026	0.4781	± 0.0024
	484.5751	± 0.0004	0.03189	± 0.00024
	588.5810	± 0.0007	0.04517	± 0.00022
	604.41105	± 0.00025	0.0820	± 0.0004
	612.46215	± 0.00026	0.0534	± 0.0008

79-Au-198	411.80205	± 0.00017	0.9554	± 0.0007
	675.8836	± 0.0007	0.00806	± 0.00007
	1087.6842	± 0.0007	0.00159	± 0.00003

80-Hg-203	279.1952	± 0.0010	0.8148	± 0.0008

81-Tl-201	135.312	± 0.034	0.02604	± 0.00022
	167.450	± 0.030	0.1000	± 0.0010

81-Tl-208	277.37	± 0.03	0.0237	± 0.0011	per ²²⁸Th decay - ²²⁸Th decay chain
	583.187	± 0.002	0.3055	± 0.0017	per ²²⁸Th decay - ²²⁸Th decay chain
	860.56	± 0.03	0.0448	± 0.0004	per ²²⁸Th decay - ²²⁸Th decay chain
	2614.511	± 0.010	0.3585	± 0.0007	per ²²⁸Th decay - ²²⁸Th decay chain

82-Pb-212	115.183	± 0.005	0.00623	± 0.00022	²²⁸Th decay chain
	238.632	± 0.002	0.436	± 0.003	²²⁸Th decay chain
	300.09	± 0.01	0.0318	± 0.0013	²²⁸Th decay chain

82-Pb-214	53.2275	± 0.0021	0.01066	± 0.00014	²²⁶Ra decay chain
	241.997	± 0.003	0.0719	± 0.0006	²²⁶Ra decay chain
	295.224	± 0.002	0.1828	± 0.0014	²²⁶Ra decay chain
	351.932	± 0.002	0.3534	± 0.0027	²²⁶Ra decay chain

83-Bi-207	569.698	± 0.002	0.9776	± 0.0003
	1063.656	± 0.003	0.7458	± 0.0049
	1770.228	± 0.009	0.0687	± 0.0003

83-Bi-212	727.33	± 0.01	0.0674	± 0.0012	²²⁸Th decay chain
	785.37	± 0.09	0.0111	± 0.0001	²²⁸Th decay chain
	1620.74	± 0.01	0.0151	± 0.0003	²²⁸Th decay chain

83-Bi-214	609.316	± 0.003	0.4516	± 0.0033	²²⁶Ra decay chain
	665.453	± 0.022	0.01521	± 0.00011	²²⁶Ra decay chain
	768.367	± 0.011	0.04850	± 0.00038	²²⁶Ra decay chain
	806.185	± 0.011	0.01255	± 0.00011	²²⁶Ra decay chain
	934.061	± 0.012	0.03074	± 0.00025	²²⁶Ra decay chain
	1120.287	± 0.010	0.1478	± 0.0011	²²⁶Ra decay chain
	1155.19	± 0.02	0.01624	± 0.00014	²²⁶Ra decay chain
	1238.110	± 0.012	0.05785	± 0.00045	²²⁶Ra decay chain
	1280.96	± 0.02	0.01425	± 0.00012	²²⁶Ra decay chain
	1377.669	± 0.012	0.03954	± 0.00033	²²⁶Ra decay chain
	1401.516	± 0.014	0.01324	± 0.00011	²²⁶Ra decay chain
	1407.993	± 0.007	0.02369	± 0.00019	²²⁶Ra decay chain
	1509.217	± 0.008	0.02108	± 0.00021	²²⁶Ra decay chain
	1661.316	± 0.013	0.01037	± 0.00010	²²⁶Ra decay chain
	1729.640	± 0.012	0.02817	± 0.00023	²²⁶Ra decay chain
	1764.539	± 0.015	0.1517	± 0.0012	²²⁶Ra decay chain
	1847.420	± 0.025	0.02000	± 0.00018	²²⁶Ra decay chain
	2118.536	± 0.008	0.01148	± 0.00011	²²⁶Ra decay chain
	2204.071	± 0.021	0.0489	± 0.0010	²²⁶Ra decay chain
	2447.673	± 0.010	0.01536	± 0.00015	²²⁶Ra decay chain

86-Rn-220	549.76	± 0.04	0.00115	± 0.00015	²²⁸Th decay chain

88-Ra-224	240.986	± 0.006	0.0412	± 0.0004	²²⁸Th decay chain

88-Ra-226	186.211	± 0.013	0.03533	± 0.00028	²²⁶Ra decay chain

90-Th-228	84.373	± 0.003	0.0117	± 0.0005	²²⁸Th decay chain
	131.612	± 0.004	0.00124	± 0.00006	²²⁸Th decay chain
	215.985	± 0.004	0.00226	± 0.00020	²²⁸Th decay chain

91-Pa-234m	258.24	± 0.07	0.000726	± 0.000009	daughter of ²³⁴Th (²³⁸U)
	742.814	± 0.022	0.00096	± 0.00003	daughter of ²³⁴Th (²³⁸U)
	766.358	± 0.020	0.00318	± 0.00005	daughter of ²³⁴Th (²³⁸U)
	786.272	± 0.022	0.00054	± 0.00001	daughter of ²³⁴Th (²³⁸U)
	1001.025	± 0.022	0.00832	± 0.00010	daughter of ²³⁴Th (²³⁸U)

95-Am-241	26.3446	± 0.0002	0.0240	± 0.0003
	33.1963	± 0.0003	0.00121	± 0.00003
	59.5409	± 0.0001	0.3578	± 0.0009

95-Am-243	43.53	± 0.02	0.0589	± 0.0010
	74.66	± 0.02	0.672	± 0.012