UIC Radionuclide Data

Radionuclide Data

Principle Radiations Emitted From Commonly Used Radionuclides
Data Taken From NCRP Report 58, Feb. 1, 1985
(Except Where Noted)

Radionuclide	Half-Life	Decay Mode	Radiation Type	Energy, keV	Number Emitted Per Decay
H-3 (Tritium)	12.35 y	Beta -	Beta 1	18.600 max 5.685 avg	1.00
C-14	5730 y	Beta -	Beta 1	156.475 max 49.469 avg	1.00
Na-22	2.602 y	Beta + (Positron)	Positron 1 Electron Auger-K X-Ray K Gamma 1 Annihilation Photons	545.4 max 215.50 avg 0.82 0.84 1274.542 511.0	0.8984 0.092 0.0012 0.99940 1.7968
P-32	14.29 d	Beta -	Beta 1	1710.3 max 694.8 avg	1.00
P-33	25.34 d	Beta -	^{Beta 1}	249.0 max 76.6 avg	1.00
S-35	87.44 d	Beta -	Beta 1	166.74 max 48.60 avg	1.00
Ca-45	163 d	Beta -	Beta 1	256.7 max 77.1 avg	1.00
Sc-46	83.79 d	Beta -	Beta 1 Gamma 1 Gamma 2	365.8 max 111.8 avg 889.277 1120.545	0.999964 0.999840 0.999870
Cr-51	27.702 d	Electron Capture	Electron Auger-L Electron Auger-K Total Electrons X-Ray L X-Ray Ka2 X Ray Ka2 X Ray Kß Total X Rays Gamma 1	0.47 4.38 0.5 4.94464 4.95220 5.43 320.0842	1.44 0.669 2.116 0.0033 0.0659 0.131 0.0264 0.2264 0.985
Fe-55	2.72 y	Electron Capture	Electron Auger-L Electron Auger-K Total Electrons X-Ray L X-Rray Ka2 X-Ray Ka1 X-Ray Kß Total X Rays	0.6 5.19 0.64 5.88765 5.89875 6.49	1.39 0.607 1.997 0.0042 0.82 0.163 0.0329 0.2821
Co-57	271.7 d	Electron Capture	Electron Auger-L Electron Auger-K Electron ce-K-1 Electron ce-L-1 Electron ce-MNO-1 Electron ce-K-2 Electron ce-L-2 Electron ce-K-3 Electron ce-L-3 Total Electrons X-Ray L X-Ray Ka2 X-Ray Ka1 X-Ray Kß Total X Ray Gamma 1 Gamma 2 Gamma 3 Gamma 4 Total Gamma	0.67 5.62 7.3007 13.5666 14.3198 114.9494 121.2153 129.3623 135.6282 0.7 6.39084 6.40384 7 14.4127 122.0614 136.4743 692.00	249 105.5 69.6 7.79 1.15 1.87 0.183 1.40 0.140 4.36633 0.8 16.6 32.8 6.63 0.5683 0.954 0.856 0.1058 0.00160 1.0588
Fe-59	44.51 d	Beta -	Beta 1 Beta 2 Beta3 Total Beta Gamma 1 Gamma 2 Gamma 3 Gamma 5 Gamma 6 (2 weak gammas omitted)	130.6 max 35.7 avg 273.3 max 80.9 avg 465.6 max 149.2 avg 116.5 avg 142.6520 192.349 334.80 1099.251 1291.596	0.0127 0.457 0.530 1.00 0.0100 0.0301 0.00271 0.563 0.437
Co-60	5.2714 y	Beta -	Beta 1 Gamma 3 Gamma 4	317.92 avg 95.80 max 1173.238 1332.501	0.99920 0.99900 0.999824
Ni-63	96 y	Beta -	Beta 1	65.88 max 17.13 avg	1.00
Sr-85	64.854 d	Electron Capture	Electron Auger-L Electron Auger-K Electron ce-K-1 Total Electrons X Ray L X Ray Ka2 X Ray Ka1 X Ray Kß Total X Rays Gamma 1	1.68 11.4 498.809 1.69 13.33580 13.39530 15 514.009	1.082 0.291 0.00617 1.37917 0.016 0.171 0.330 0.0866 0.6036 0.980
Nb-95*	34.975 d	Beta -	Electron Auger-L Electron Auger-K Electron ce-K-1 Electron ce-K-3 Electron ce-L-3 Beta 1 Beta 2 Beta 3 Total Beta X Ray L X Ray Ka2 X Ray Ka1 X Ray ß Gamma 1 Gamma 2 Gamma 3	2.270 14.80 184.120 745.807 762.942 925.6 max 321.94 avg 721.5 max 283.58 avg 159.8 max 43.36 avg 43.48 kev avg 2.29 17.37431 17.47930 19.60 204.12 561.88 765.790	0.00141 0.000304 0.000013 0.00128 0.000140 0.00030 0.00017 0.9997 1.0002 0.000059 0.000284 0.00543 0.000160 0.00028 0.00013 0.9981
Mo-99	65.92 h	Beta -	Electron ce-M-1* Electron ce-NOP-1* Electron Auger-L* Electron Auger-K* Electron ce-K-2 Electron ce-L-2 Electron ce-MNO-2 Electron ce-K-4* Electron ce-K-5* Electron ce-L-4* Electron ce-L-5* Electron ce-M-4* Electron ce-K-8 Electron ce-L-8 Beta 1 Beta 2 Beta 3 Beta 4 Beta 5 Total Beta X Ray L* X Ray Ka2* X Ray Ka1* X Ray Kß* Gamma 2 Gamma 4* Gamma 8 Gamma 11 Gamma 25 Gamma 27 Gamma 28 25 weak gammas omitted * From Daughter, Tc-99m	1.630 2.106 2.17 15.5 19.5395 37.5410 40.0395 119.4670 121.63 137.4685 139.63 139.9670 160.013 178.014 215.2 max 59.9 avg 353.0 max 104.3 avg 436.4 max 133.1 avg 847.9 max 289.7 avg 1214.3 max 442.8 avg 388.8 avg 2.42 18.2508 18.3671 20.6 40.58347 140.5110 181.057 366.421 739.500 777.921 822.972	0.836 0.1173 0.155 0.031 0.0378 0.00458 0.00110 0.090 0.0067 0.0109 0.00207 0.00199 0.00765 0.00114 0.00111 0.00134 0.1655 0.0117 0.8193 0.9991 0.0073 0.0317 0.061 0.0182 0.0116 0.906 0.0607 0.01203 0.12223 0.0431 0.00133
Tc-99m	6.007 h	Internal Transition	Electron ce-M-1 Electron ce-NOP-1 Auger-L Auger -K Electron ce-K-2 Electron ce-K-3 Electron ce-L-2 Electron ce-L-3 Electron ce-M-2 X ray L X ray ka2 X ray ka1 X ray kß Gamma 2	1.630 2.106 2.17 15.5 119.4670 121.63 137.4685 139.63 139.9670 2.42 18.2508 18.3671 20.6 140.5110	0.8684 0.1218 0.104 0.021 0.088 0.0069 0.0106 0.00215 0.00198 0.0049 0.0212 0.0406 0.0122 0.8897
Ru-106*	368.2 d	Beta -	Beta 1 Beta 2* Beta 3* Beta 4* Beta 5* Beta 6* Beta 7* Total Beta Gamma 4* Gamma 6* Gamma 7* Gamma 14* Gamma 17* Gamma 21* Gamma 38* *From Daughter, Rh-106	39.40 max 10.03 avg 1539 max 582 avg 1979 max 779 avg 2407 max 976 avg 2413 max 979 avg 3029 max 1267 avg 3541 max 1508 avg 1410 avg 511.85 616.17 621.84 873.6 1050.47 1128.02 1562.20	1.00 0.00460 0.00177 0.10 0.0064 0.081 0.786 1.00 0.206 0.0070 0.098 0.00416 0.0173 0.00396 0.00157
Cd-109	462.6 d	Electron Capture	Electron Auger-L Electron Auger-K Electron ce-K-1 Electron ce-L-1 Electron ce-M-1 Electron ce-NOP-1 X Ray L X Ray Ka2 X Ray Ka1 X Ray Kß Gamma 1	2.6 18.5 62.5201 84.2283 87.3166 87.9389 3 21.9903 22.16290 24.9 88.0341	1.66 0.21 0.419 0.44 0.090 0.0160 0.11 0.291 0.551 0.178 0.0372
In-111	2.805 d (67.32 h)	Electron Capture	Electron Electron Electron Electron Electron Electron Electron Electron X Ray X Ray X Ray X Ray Gamma 1 Gamma 2	2.72 19.3 144.57 167.26 170.51 218.68 241.37 244.62 3.13 22.98410 23.17360 26 171.28 245.39	1.00 0.16 0.0789 0.0096 0.00222 0.0503 0.00785 0.00182 0.070 0.235 0.444 0.145 0.9093 0.9400
I-125	59.6 d	Electron Capture	Electron Electron Electron Electron Electron Electron X Ray X Ray X Ray X Ray Gamma 1	3.19 3.6781 22.7 30.5527 34.4859 35.3256 3.77 27.2017 27.4723 31 35.4919	1.56 0.798 0.2 0.107 0.021 0.007 0.15 0.397 0.741 0.257 0.0667
I-131	8.021 d	Beta -	Electron Electron Electron Electron Electron Electron Electron Electron Beta 1 Beta 2 Beta 3 Beta 4 Beta 5 Tota Beta X Ray L X Ray Ka2 X Ray Ka1 X Ray Kß Gamma 1 Gamma 4 Gamma 7 Gamma 12 Gamma 14 Gamma 16 Gamma 17 Gamma 18 Gamma 19	3.43 24.6 45.622 74.730 79.041 249.737 329.919 359.027 274.9 max 69.40 avg 303.9 max 87.00 avg 333.8 max 96.60 avg 606.3 max 191.6 avg 806.9 max 283.2 avg 181.7 avg 4.1 29.4580 29.7790 33.6 80.183 177.210 284.298 325.781 364.480 502.991 636.973 642.703 722.893	0.051 0.0060 0.0354 0.00472 0.001310 0.00248 0.0154 0.00244 0.0213 0.00620 0.0736 0.894 0.00420 1.00 0.0056 0.0137 0.0254 0.0090 0.0262 0.00265 0.0606 0.00251 0.812 0.00361 0.0727 0.00220 0.0180
Cs-137	30.0 y	Beta -	Electron* Electron* Electron* Electron* Electron* Beta 1 Beta 2 X Ray L* X Ray Ka2* X Ray Ka1* X Ray Kß* Gamma 1* *From Daughter, Ba-137m	3.67 26.4 624.219 655.671 660.367 511.5 max 173.5 avg 1173.2 max 415.4 avg 4.47 31.8171 32.1936 36.4 661.0	0.073 0.0077 0.0778 0.0142 0.00472 0.9443 0.0553 0.01 0.0199 0.0368 0.0134 0.0851
Ce-141	32.5 d	Beta -	Electron Electron Electron Electron Electron Beta 1 Beta 2 Total Beta X Ray L X Ray Ka2 X Ray Ka1 X Ray Kß Gamma	4 29.4 103.449 138.605 143.929 434.8 max 129.7 avg 580 max 180.7 avg 145.2 avg 5 35.55020 36.02630 40.7 145.440	0.158 0.015 0.182 0.0250 0.0068 0.696 0.0340 1.00 0.026 0.0474 0.087 0.0326 0.193
Tl-204*	3.78 y	Beta - and Electron Capture	Electron Auger-L Electron Auger-K Beta 1 X Ray L X Ray K a2 X Ray Ka1 X Ray Kß	7.6 53.8 763.70 max 244.03 avg 9.990 68.8950 70.8190 80.30	0.0140 0.000575 0.9710 0.0086 0.00477 0.0081 0.00357

* Data obtained from the National Nuclear Data Center, Brookhaven National Laboratory, Upton, NY 11973-5000.