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Decay tables

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
1-50 | 50-100 | 100-150 | 150-200 | 200-252



133Ba (Barium-133 / Ba-133) Half-life: 28.79 years *

year\month 0 1 2 3 4 5 6 7 8 9 10 11
0 1.0000 0.9945 0.9891 0.9837 0.9783 0.9730 0.9677 0.9624 0.9571 0.9519 0.9467 0.9415
1 0.9364 0.9312 0.9261 0.9211 0.9160 0.9110 0.9061 0.9011 0.8962 0.8913 0.8864 0.8816
2 0.8768 0.8720 0.8672 0.8625 0.8577 0.8531 0.8484 0.8438 0.8391 0.8346 0.8300 0.8255
3 0.8210 0.8165 0.8120 0.8076 0.8032 0.7988 0.7944 0.7901 0.7857 0.7814 0.7772 0.7729
4 0.7687 0.7645 0.7603 0.7562 0.7520 0.7479 0.7438 0.7398 0.7357 0.7317 0.7277 0.7237
5 0.7198 0.7158 0.7119 0.7080 0.7042 0.7003 0.6965 0.6927 0.6889 0.6851 0.6814 0.6777
6 0.6740 0.6703 0.6666 0.6630 0.6593 0.6557 0.6522 0.6486 0.6451 0.6415 0.6380 0.6345
7 0.6311 0.6276 0.6242 0.6208 0.6174 0.6140 0.6107 0.6073 0.6040 0.6007 0.5974 0.5941
8 0.5909 0.5877 0.5845 0.5813 0.5781 0.5749 0.5718 0.5687 0.5656 0.5625 0.5594 0.5563
9 0.5533 0.5503 0.5473 0.5443 0.5413 0.5383 0.5354 0.5325 0.5296 0.5267 0.5238 0.5209
10 0.5181 0.5152 0.5124 0.5096 0.5068 0.5041 0.5013 0.4986 0.4959 0.4931 0.4904 0.4878
11 0.4851 0.4824 0.4798 0.4772 0.4746 0.4720 0.4694 0.4668 0.4643 0.4618 0.4592 0.4567
12 0.4542 0.4517 0.4493 0.4468 0.4444 0.4419 0.4395 0.4371 0.4347 0.4324 0.4300 0.4277
13 0.4253 0.4230 0.4207 0.4184 0.4161 0.4138 0.4116 0.4093 0.4071 0.4048 0.4026 0.4004
14 0.3982 0.3961 0.3939 0.3917 0.3896 0.3875 0.3854 0.3833 0.3812 0.3791 0.3770 0.3749
15 0.3729 0.3709 0.3688 0.3668 0.3648 0.3628 0.3608 0.3589 0.3569 0.3549 0.3530 0.3511
16 0.3492 0.3473 0.3454 0.3435 0.3416 0.3397 0.3379 0.3360 0.3342 0.3324 0.3305 0.3287
17 0.3269 0.3252 0.3234 0.3216 0.3198 0.3181 0.3164 0.3146 0.3129 0.3112 0.3095 0.3078
18 0.3061 0.3045 0.3028 0.3011 0.2995 0.2979 0.2962 0.2946 0.2930 0.2914 0.2898 0.2882
19 0.2866 0.2851 0.2835 0.2820 0.2804 0.2789 0.2774 0.2759 0.2743 0.2728 0.2714 0.2699
109Cd (Cadmium-109 / Cd-109) Half-life: 461.4 days

days 0 5 10 15 20 25 30 35 40 45
0 1.0000 0.9925 0.9851 0.9777 0.9704 0.9631 0.9559 0.9488 0.9417 0.9346
50 0.9276 0.9207 0.9138 0.9070 0.9002 0.8934 0.8868 0.8801 0.8735 0.8670
100 0.8605 0.8541 0.8477 0.8413 0.8350 0.8288 0.8226 0.8164 0.8103 0.8043
150 0.7982 0.7923 0.7863 0.7805 0.7746 0.7688 0.7631 0.7574 0.7517 0.7461
200 0.7405 0.7349 0.7294 0.7240 0.7186 0.7132 0.7078 0.7026 0.6973 0.6921
250 0.6869 0.6818 0.6767 0.6716 0.6666 0.6616 0.6566 0.6517 0.6468 0.6420
300 0.6372 0.6324 0.6277 0.6230 0.6183 0.6137 0.6091 0.6046 0.6000 0.5955
350 0.5911 0.5867 0.5823 0.5779 0.5736 0.5693 0.5650 0.5608 0.5566 0.5524
400 0.5483 0.5442 0.5401 0.5361 0.5321 0.5281 0.5241 0.5202 0.5163 0.5125
450 0.5086 0.5048 0.5011 0.4973 0.4936 0.4899 0.4862 0.4826 0.4790 0.4754
500 0.4718 0.4683 0.4648 0.4613 0.4579 0.4544 0.4510 0.4477 0.4443 0.4410
550 0.4377 0.4344 0.4312 0.4279 0.4247 0.4216 0.4184 0.4153 0.4122 0.4091
600 0.4060 0.4030 0.4000 0.3970 0.3940 0.3910 0.3881 0.3852 0.3823 0.3795
650 0.3766 0.3738 0.3710 0.3682 0.3655 0.3628 0.3600 0.3573 0.3547 0.3520
700 0.3494 0.3468 0.3442 0.3416 0.3390 0.3365 0.3340 0.3315 0.3290 0.3265
750 0.3241 0.3217 0.3193 0.3169 0.3145 0.3122 0.3098 0.3075 0.3052 0.3029
800 0.3006 0.2984 0.2962 0.2939 0.2917 0.2896 0.2874 0.2852 0.2831 0.2810
850 0.2789 0.2768 0.2747 0.2727 0.2706 0.2686 0.2666 0.2646 0.2626 0.2607
900 0.2587 0.2568 0.2549 0.2529 0.2511 0.2492 0.2473 0.2455 0.2436 0.2418
950 0.2400 0.2382 0.2364 0.2346 0.2329 0.2311 0.2294 0.2277 0.2260 0.2243

139Ce (Cerium-139 / Ce-139) Half-life: 137.641 days

days 0 2 4 6 8 10 12 14 16 18
0 1.0000 0.9900 0.9801 0.9702 0.9605 0.9509 0.9414 0.9319 0.9226 0.9133
20 0.9042 0.8951 0.8862 0.8773 0.8685 0.8598 0.8512 0.8426 0.8342 0.8258
40 0.8176 0.8094 0.8013 0.7932 0.7853 0.7774 0.7696 0.7619 0.7543 0.7467
60 0.7392 0.7318 0.7245 0.7172 0.7100 0.7029 0.6959 0.6889 0.6820 0.6752
80 0.6684 0.6617 0.6551 0.6485 0.6420 0.6356 0.6292 0.6229 0.6167 0.6105
100 0.6044 0.5983 0.5923 0.5864 0.5805 0.5747 0.5689 0.5632 0.5576 0.5520
120 0.5465 0.5410 0.5356 0.5302 0.5249 0.5196 0.5144 0.5093 0.5041 0.4991
140 0.4941 0.4891 0.4842 0.4794 0.4746 0.4698 0.4651 0.4605 0.4558 0.4513
160 0.4468 0.4423 0.4378 0.4335 0.4291 0.4248 0.4206 0.4163 0.4122 0.4080
180 0.4039 0.3999 0.3959 0.3919 0.3880 0.3841 0.3803 0.3765 0.3727 0.3689
200 0.3652 0.3616 0.3580 0.3544 0.3508 0.3473 0.3438 0.3404 0.3370 0.3336
220 0.3303 0.3269 0.3237 0.3204 0.3172 0.3140 0.3109 0.3078 0.3047 0.3016
240 0.2986 0.2956 0.2927 0.2897 0.2868 0.2839 0.2811 0.2783 0.2755 0.2727
260 0.2700 0.2673 0.2646 0.2620 0.2593 0.2567 0.2542 0.2516 0.2491 0.2466
280 0.2441 0.2417 0.2393 0.2369 0.2345 0.2321 0.2298 0.2275 0.2252 0.2230
300 0.2207 0.2185 0.2163 0.2142 0.2120 0.2099 0.2078 0.2057 0.2036 0.2016
320 0.1996 0.1976 0.1956 0.1936 0.1917 0.1898 0.1879 0.1860 0.1841 0.1823
340 0.1805 0.1787 0.1769 0.1751 0.1733 0.1716 0.1699 0.1682 0.1665 0.1648
360 0.1632 0.1615 0.1599 0.1583 0.1567 0.1552 0.1536 0.1521 0.1505 0.1490
380 0.1475 0.1461 0.1446 0.1431 0.1417 0.1403 0.1389 0.1375 0.1361 0.1348
134Cs (Point gamma standard spectrometry sources set / "OSGI-R"-set: Cesium-134 / Cs-134) Half-life: 2.0648 years **

days 0 10 20 30 40 50 60 70 80 90
0 1.0000 0.9908 0.9818 0.9728 0.9639 0.9551 0.9463 0.9377 0.9291 0.9206
100 0.9121 0.9038 0.8955 0.8873 0.8792 0.8711 0.8632 0.8553 0.8474 0.8397
200 0.8320 0.8244 0.8168 0.8094 0.8019 0.7946 0.7873 0.7801 0.7730 0.7659
300 0.7589 0.7519 0.7451 0.7382 0.7315 0.7248 0.7182 0.7116 0.7051 0.6986
400 0.6922 0.6859 0.6796 0.6734 0.6672 0.6611 0.6551 0.6491 0.6431 0.6372
500 0.6314 0.6256 0.6199 0.6142 0.6086 0.6030 0.5975 0.5920 0.5866 0.5812
600 0.5759 0.5707 0.5654 0.5603 0.5551 0.5500 0.5450 0.5400 0.5351 0.5302
700 0.5253 0.5205 0.5157 0.5110 0.5063 0.5017 0.4971 0.4926 0.4881 0.4836
800 0.4792 0.4748 0.4704 0.4661 0.4619 0.4576 0.4534 0.4493 0.4452 0.4411
900 0.4371 0.4331 0.4291 0.4252 0.4213 0.4174 0.4136 0.4098 0.4061 0.4023
1000 0.3987 0.3950 0.3914 0.3878 0.3843 0.3807 0.3773 0.3738 0.3704 0.3670
1100 0.3636 0.3603 0.3570 0.3537 0.3505 0.3473 0.3441 0.3410 0.3378 0.3348
1200 0.3317 0.3287 0.3256 0.3227 0.3197 0.3168 0.3139 0.3110 0.3082 0.3053
1300 0.3025 0.2998 0.2970 0.2943 0.2916 0.2889 0.2863 0.2837 0.2811 0.2785
1400 0.2760 0.2734 0.2709 0.2685 0.2660 0.2636 0.2611 0.2588 0.2564 0.2540
1500 0.2517 0.2494 0.2471 0.2449 0.2426 0.2404 0.2382 0.2360 0.2339 0.2317
1600 0.2296 0.2275 0.2254 0.2234 0.2213 0.2193 0.2173 0.2153 0.2133 0.2114
1700 0.2094 0.2075 0.2056 0.2037 0.2019 0.2000 0.1982 0.1964 0.1946 0.1928
1800 0.1910 0.1893 0.1875 0.1858 0.1841 0.1824 0.1808 0.1791 0.1775 0.1759
1900 0.1742 0.1726 0.1711 0.1695 0.1680 0.1664 0.1649 0.1634 0.1619 0.1604
57Сo (Cobalt-57 / Co-57) Half-life: 271.8 days

days 0 5 10 15 20 25 30 35 40 45
0 1.0000 0.9873 0.9748 0.9625 0.9503 0.9382 0.9263 0.9146 0.9030 0.8916
50 0.8803 0.8691 0.8581 0.8472 0.8365 0.8259 0.8154 0.8051 0.7949 0.7848
100 0.7749 0.7651 0.7554 0.7458 0.7364 0.7270 0.7178 0.7087 0.6998 0.6909
150 0.6821 0.6735 0.6650 0.6565 0.6482 0.6400 0.6319 0.6239 0.6160 0.6082
200 0.6005 0.5929 0.5853 0.5779 0.5706 0.5634 0.5562 0.5492 0.5422 0.5354
250 0.5286 0.5219 0.5153 0.5087 0.5023 0.4959 0.4897 0.4834 0.4773 0.4713
300 0.4653 0.4594 0.4536 0.4478 0.4422 0.4366 0.4310 0.4256 0.4202 0.4149
350 0.4096 0.4044 0.3993 0.3942 0.3892 0.3843 0.3794 0.3746 0.3699 0.3652
400 0.3606 0.3560 0.3515 0.3470 0.3426 0.3383 0.3340 0.3298 0.3256 0.3215
450 0.3174 0.3134 0.3094 0.3055 0.3016 0.2978 0.2940 0.2903 0.2866 0.2830
500 0.2794 0.2759 0.2724 0.2689 0.2655 0.2621 0.2588 0.2555 0.2523 0.2491
550 0.2460 0.2428 0.2398 0.2367 0.2337 0.2308 0.2278 0.2249 0.2221 0.2193
600 0.2165 0.2138 0.2111 0.2084 0.2057 0.2031 0.2006 0.1980 0.1955 0.1930
650 0.1906 0.1882 0.1858 0.1834 0.1811 0.1788 0.1766 0.1743 0.1721 0.1699
700 0.1678 0.1656 0.1635 0.1615 0.1594 0.1574 0.1554 0.1534 0.1515 0.1496
750 0.1477 0.1458 0.1440 0.1421 0.1403 0.1386 0.1368 0.1351 0.1334 0.1317
800 0.1300 0.1284 0.1267 0.1251 0.1235 0.1220 0.1204 0.1189 0.1174 0.1159
850 0.1144 0.1130 0.1116 0.1101 0.1088 0.1074 0.1060 0.1047 0.1033 0.1020
900 0.1007 0.0995 0.0982 0.0970 0.0957 0.0945 0.0933 0.0921 0.0910 0.0898
950 0.0887 0.0876 0.0864 0.0854 0.0843 0.0832 0.0821 0.0811 0.0801 0.0791
60Co (Cobalt-60 / Co-60) Half-life: 5.271 years *

year\month 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
0 1.0000 0.9945 0.9891 0.9837 0.9783 0.9730 0.9677 0.9624 0.9571 0.9519 0.9467 0.9415
0.5 0.9364 0.9312 0.9262 0.9211 0.9161 0.9111 0.9061 0.9011 0.8962 0.8913 0.8864 0.8816
1 0.8768 0.8720 0.8672 0.8625 0.8578 0.8531 0.8484 0.8438 0.8392 0.8346 0.8300 0.8255
1.5 0.8210 0.8165 0.8120 0.8076 0.8032 0.7988 0.7944 0.7901 0.7858 0.7815 0.7772 0.7730
2 0.7687 0.7645 0.7604 0.7562 0.7521 0.7480 0.7439 0.7398 0.7358 0.7317 0.7277 0.7238
2.5 0.7198 0.7159 0.7120 0.7081 0.7042 0.7004 0.6965 0.6927 0.6889 0.6852 0.6814 0.6777
3 0.6740 0.6703 0.6667 0.6630 0.6594 0.6558 0.6522 0.6486 0.6451 0.6416 0.6381 0.6346
3.5 0.6311 0.6277 0.6242 0.6208 0.6174 0.6141 0.6107 0.6074 0.6041 0.6008 0.5975 0.5942
4 0.5910 0.5877 0.5845 0.5813 0.5781 0.5750 0.5718 0.5687 0.5656 0.5625 0.5594 0.5564
4.5 0.5534 0.5503 0.5473 0.5443 0.5414 0.5384 0.5355 0.5325 0.5296 0.5267 0.5238 0.5210
5 0.5181 0.5153 0.5125 0.5097 0.5069 0.5041 0.5014 0.4986 0.4959 0.4932 0.4905 0.4878
5.5 0.4852 0.4825 0.4799 0.4773 0.4746 0.4721 0.4695 0.4669 0.4644 0.4618 0.4593 0.4568
6 0.4543 0.4518 0.4493 0.4469 0.4444 0.4420 0.4396 0.4372 0.4348 0.4324 0.4301 0.4277
6.5 0.4254 0.4231 0.4207 0.4184 0.4162 0.4139 0.4116 0.4094 0.4071 0.4049 0.4027 0.4005
7 0.3983 0.3961 0.3940 0.3918 0.3897 0.3875 0.3854 0.3833 0.3812 0.3791 0.3771 0.3750
7.5 0.3730 0.3709 0.3689 0.3669 0.3649 0.3629 0.3609 0.3589 0.3570 0.3550 0.3531 0.3512
8 0.3492 0.3473 0.3454 0.3435 0.3417 0.3398 0.3379 0.3361 0.3343 0.3324 0.3306 0.3288
8.5 0.3270 0.3252 0.3234 0.3217 0.3199 0.3182 0.3164 0.3147 0.3130 0.3113 0.3096 0.3079
9 0.3062 0.3045 0.3029 0.3012 0.2996 0.2979 0.2963 0.2947 0.2931 0.2915 0.2899 0.2883
9.5 0.2867 0.2851 0.2836 0.2820 0.2805 0.2790 0.2774 0.2759 0.2744 0.2729 0.2714 0.2699
152Eu (Point gamma standard spectrometry sources set / "OSGI-R"-set: Europium-152 / Eu-152) Half-life: 13.516 years *

year\month 0 1 2 3 4 5 6 7 8 9 10 11
0 1.0000 0.9957 0.9915 0.9873 0.9831 0.9789 0.9747 0.9705 0.9664 0.9623 0.9582 0.9541
1 0.9500 0.9460 0.9419 0.9379 0.9339 0.9299 0.9260 0.9220 0.9181 0.9142 0.9103 0.9064
2 0.9025 0.8987 0.8948 0.8910 0.8872 0.8834 0.8797 0.8759 0.8722 0.8685 0.8648 0.8611
3 0.8574 0.8537 0.8501 0.8465 0.8429 0.8393 0.8357 0.8321 0.8286 0.8250 0.8215 0.8180
4 0.8145 0.8111 0.8076 0.8042 0.8007 0.7973 0.7939 0.7905 0.7872 0.7838 0.7805 0.7771
5 0.7738 0.7705 0.7672 0.7640 0.7607 0.7575 0.7542 0.7510 0.7478 0.7446 0.7414 0.7383
6 0.7351 0.7320 0.7289 0.7258 0.7227 0.7196 0.7165 0.7135 0.7104 0.7074 0.7044 0.7014
7 0.6984 0.6954 0.6924 0.6895 0.6865 0.6836 0.6807 0.6778 0.6749 0.6720 0.6692 0.6663
8 0.6635 0.6606 0.6578 0.6550 0.6522 0.6494 0.6467 0.6439 0.6412 0.6384 0.6357 0.6330
9 0.6303 0.6276 0.6249 0.6223 0.6196 0.6170 0.6143 0.6117 0.6091 0.6065 0.6039 0.6014
10 0.5988 0.5962 0.5937 0.5912 0.5886 0.5861 0.5836 0.5811 0.5787 0.5762 0.5737 0.5713
11 0.5689 0.5664 0.5640 0.5616 0.5592 0.5568 0.5545 0.5521 0.5497 0.5474 0.5451 0.5427
12 0.5404 0.5381 0.5358 0.5335 0.5313 0.5290 0.5267 0.5245 0.5223 0.5200 0.5178 0.5156
13 0.5134 0.5112 0.5090 0.5069 0.5047 0.5026 0.5004 0.4983 0.4962 0.4940 0.4919 0.4898
14 0.4877 0.4857 0.4836 0.4815 0.4795 0.4774 0.4754 0.4734 0.4713 0.4693 0.4673 0.4653
15 0.4634 0.4614 0.4594 0.4575 0.4555 0.4536 0.4516 0.4497 0.4478 0.4459 0.4440 0.4421
16 0.4402 0.4383 0.4364 0.4346 0.4327 0.4309 0.4291 0.4272 0.4254 0.4236 0.4218 0.4200
17 0.4182 0.4164 0.4146 0.4129 0.4111 0.4093 0.4076 0.4059 0.4041 0.4024 0.4007 0.3990
18 0.3973 0.3956 0.3939 0.3922 0.3905 0.3889 0.3872 0.3856 0.3839 0.3823 0.3807 0.3790
19 0.3774 0.3758 0.3742 0.3726 0.3710 0.3694 0.3679 0.3663 0.3647 0.3632 0.3616 0.3601
153Gd (Point gamma standard spectrometry sources set / "OSGI-R"-set: Gadolinium-153 / Gd-153) Half-life: 240.4 days

days 0 5 10 15 20 25 30 35 40 45
0 1.0000 0.9857 0.9716 0.9577 0.9440 0.9305 0.9171 0.9040 0.8911 0.8783
50 0.8657 0.8534 0.8411 0.8291 0.8172 0.8055 0.7940 0.7826 0.7714 0.7604
100 0.7495 0.7388 0.7282 0.7178 0.7075 0.6974 0.6874 0.6776 0.6679 0.6583
150 0.6489 0.6396 0.6304 0.6214 0.6125 0.6038 0.5951 0.5866 0.5782 0.5699
200 0.5618 0.5537 0.5458 0.5380 0.5303 0.5227 0.5152 0.5078 0.5006 0.4934
250 0.4863 0.4794 0.4725 0.4658 0.4591 0.4525 0.4460 0.4397 0.4334 0.4272
300 0.4211 0.4150 0.4091 0.4032 0.3975 0.3918 0.3862 0.3806 0.3752 0.3698
350 0.3645 0.3593 0.3542 0.3491 0.3441 0.3392 0.3343 0.3295 0.3248 0.3202
400 0.3156 0.3111 0.3066 0.3022 0.2979 0.2936 0.2894 0.2853 0.2812 0.2772
450 0.2732 0.2693 0.2655 0.2617 0.2579 0.2542 0.2506 0.2470 0.2435 0.2400
500 0.2365 0.2331 0.2298 0.2265 0.2233 0.2201 0.2169 0.2138 0.2108 0.2078
550 0.2048 0.2018 0.1990 0.1961 0.1933 0.1905 0.1878 0.1851 0.1825 0.1799
600 0.1773 0.1747 0.1722 0.1698 0.1674 0.1650 0.1626 0.1603 0.1580 0.1557
650 0.1535 0.1513 0.1491 0.1470 0.1449 0.1428 0.1408 0.1388 0.1368 0.1348
700 0.1329 0.1310 0.1291 0.1273 0.1254 0.1236 0.1219 0.1201 0.1184 0.1167
750 0.1150 0.1134 0.1118 0.1102 0.1086 0.1070 0.1055 0.1040 0.1025 0.1010
800 0.0996 0.0982 0.0968 0.0954 0.0940 0.0927 0.0913 0.0900 0.0887 0.0875
850 0.0862 0.0850 0.0838 0.0826 0.0814 0.0802 0.0791 0.0779 0.0768 0.0757
900 0.0746 0.0736 0.0725 0.0715 0.0705 0.0695 0.0685 0.0675 0.0665 0.0656
950 0.0646 0.0637 0.0628 0.0619 0.0610 0.0601 0.0593 0.0584 0.0576 0.0568
124I (Iodine-124 / I-124) Half-life: 4.176 days

hours 0 1 2 3 4 5 6 7 8 9
0 1.0000 0.9931 0.9863 0.9795 0.9727 0.9660 0.9594 0.9527 0.9462 0.9397
10 0.9332 0.9267 0.9204 0.9140 0.9077 0.9015 0.8952 0.8891 0.8829 0.8769
20 0.8708 0.8648 0.8589 0.8529 0.8471 0.8412 0.8354 0.8297 0.8239 0.8183
30 0.8126 0.8070 0.8015 0.7959 0.7905 0.7850 0.7796 0.7742 0.7689 0.7636
40 0.7583 0.7531 0.7479 0.7428 0.7376 0.7326 0.7275 0.7225 0.7175 0.7126
50 0.7077 0.7028 0.6979 0.6931 0.6883 0.6836 0.6789 0.6742 0.6696 0.6649
60 0.6604 0.6558 0.6513 0.6468 0.6423 0.6379 0.6335 0.6292 0.6248 0.6205
70 0.6162 0.6120 0.6078 0.6036 0.5994 0.5953 0.5912 0.5871 0.5831 0.5791
80 0.5751 0.5711 0.5672 0.5633 0.5594 0.5555 0.5517 0.5479 0.5441 0.5404
90 0.5366 0.5329 0.5293 0.5256 0.5220 0.5184 0.5148 0.5113 0.5077 0.5042
100 0.5008 0.4973 0.4939 0.4905 0.4871 0.4838 0.4804 0.4771 0.4738 0.4706
110 0.4673 0.4641 0.4609 0.4577 0.4546 0.4514 0.4483 0.4452 0.4422 0.4391
120 0.4361 0.4331 0.4301 0.4271 0.4242 0.4213 0.4184 0.4155 0.4126 0.4098
130 0.4069 0.4041 0.4014 0.3986 0.3958 0.3931 0.3904 0.3877 0.3850 0.3824
140 0.3798 0.3771 0.3745 0.3720 0.3694 0.3668 0.3643 0.3618 0.3593 0.3568
150 0.3544 0.3519 0.3495 0.3471 0.3447 0.3423 0.3400 0.3376 0.3353 0.3330
160 0.3307 0.3284 0.3262 0.3239 0.3217 0.3195 0.3173 0.3151 0.3129 0.3107
170 0.3086 0.3065 0.3044 0.3023 0.3002 0.2981 0.2961 0.2940 0.2920 0.2900
180 0.2880 0.2860 0.2840 0.2821 0.2801 0.2782 0.2763 0.2744 0.2725 0.2706
190 0.2687 0.2669 0.2650 0.2632 0.2614 0.2596 0.2578 0.2560 0.2543 0.2525
55Fe (Iron-55 / Fe-55) Half-life: 2.741 years **

days 0 10 20 30 40 50 60 70 80 90
0 1.0000 0.9931 0.9862 0.9794 0.9727 0.9660 0.9593 0.9527 0.9461 0.9395
100 0.9331 0.9266 0.9202 0.9139 0.9076 0.9013 0.8951 0.8889 0.8828 0.8767
200 0.8706 0.8646 0.8586 0.8527 0.8468 0.8410 0.8352 0.8294 0.8237 0.8180
300 0.8123 0.8067 0.8012 0.7956 0.7901 0.7847 0.7793 0.7739 0.7685 0.7632
400 0.7580 0.7527 0.7475 0.7424 0.7372 0.7321 0.7271 0.7221 0.7171 0.7121
500 0.7072 0.7023 0.6975 0.6927 0.6879 0.6831 0.6784 0.6737 0.6691 0.6645
600 0.6599 0.6553 0.6508 0.6463 0.6418 0.6374 0.6330 0.6286 0.6243 0.6200
700 0.6157 0.6115 0.6072 0.6030 0.5989 0.5947 0.5906 0.5866 0.5825 0.5785
800 0.5745 0.5705 0.5666 0.5627 0.5588 0.5549 0.5511 0.5473 0.5435 0.5398
900 0.5360 0.5323 0.5287 0.5250 0.5214 0.5178 0.5142 0.5107 0.5071 0.5036
1000 0.5002 0.4967 0.4933 0.4899 0.4865 0.4831 0.4798 0.4765 0.4732 0.4699
1100 0.4667 0.4635 0.4603 0.4571 0.4539 0.4508 0.4477 0.4446 0.4415 0.4385
1200 0.4354 0.4324 0.4295 0.4265 0.4235 0.4206 0.4177 0.4148 0.4120 0.4091
1300 0.4063 0.4035 0.4007 0.3979 0.3952 0.3925 0.3898 0.3871 0.3844 0.3817
1400 0.3791 0.3765 0.3739 0.3713 0.3687 0.3662 0.3637 0.3612 0.3587 0.3562
1500 0.3537 0.3513 0.3489 0.3464 0.3441 0.3417 0.3393 0.3370 0.3347 0.3323
1600 0.3300 0.3278 0.3255 0.3233 0.3210 0.3188 0.3166 0.3144 0.3123 0.3101
1700 0.3080 0.3058 0.3037 0.3016 0.2995 0.2975 0.2954 0.2934 0.2913 0.2893
1800 0.2873 0.2854 0.2834 0.2814 0.2795 0.2776 0.2756 0.2737 0.2718 0.2700
1900 0.2681 0.2663 0.2644 0.2626 0.2608 0.2590 0.2572 0.2554 0.2537 0.2519
54Mn (Point gamma standard spectrometry sources set / "OSGI-R"-set: Manganese-54 / Mn-54) Half-life: 312.11 days

days 0 5 10 15 20 25 30 35 40 45
0 1.0000 0.9890 0.9780 0.9672 0.9566 0.9460 0.9355 0.9252 0.9150 0.9049
50 0.8949 0.8850 0.8752 0.8656 0.8560 0.8466 0.8372 0.8280 0.8188 0.8098
100 0.8008 0.7920 0.7833 0.7746 0.7661 0.7576 0.7492 0.7410 0.7328 0.7247
150 0.7167 0.7088 0.7009 0.6932 0.6855 0.6780 0.6705 0.6631 0.6558 0.6485
200 0.6414 0.6343 0.6273 0.6203 0.6135 0.6067 0.6000 0.5934 0.5868 0.5804
250 0.5740 0.5676 0.5613 0.5551 0.5490 0.5430 0.5370 0.5310 0.5252 0.5194
300 0.5136 0.5080 0.5023 0.4968 0.4913 0.4859 0.4805 0.4752 0.4700 0.4648
350 0.4596 0.4546 0.4496 0.4446 0.4397 0.4348 0.4300 0.4253 0.4206 0.4159
400 0.4113 0.4068 0.4023 0.3979 0.3935 0.3891 0.3848 0.3806 0.3764 0.3722
450 0.3681 0.3640 0.3600 0.3560 0.3521 0.3482 0.3444 0.3406 0.3368 0.3331
500 0.3294 0.3258 0.3222 0.3186 0.3151 0.3116 0.3082 0.3048 0.3014 0.2981
550 0.2948 0.2915 0.2883 0.2851 0.2820 0.2789 0.2758 0.2728 0.2697 0.2668
600 0.2638 0.2609 0.2580 0.2552 0.2524 0.2496 0.2468 0.2441 0.2414 0.2387
650 0.2361 0.2335 0.2309 0.2284 0.2258 0.2233 0.2209 0.2184 0.2160 0.2136
700 0.2113 0.2089 0.2066 0.2044 0.2021 0.1999 0.1977 0.1955 0.1933 0.1912
750 0.1891 0.1870 0.1849 0.1829 0.1809 0.1789 0.1769 0.1749 0.1730 0.1711
800 0.1692 0.1673 0.1655 0.1637 0.1618 0.1601 0.1583 0.1565 0.1548 0.1531
850 0.1514 0.1497 0.1481 0.1465 0.1448 0.1432 0.1417 0.1401 0.1385 0.1370
900 0.1355 0.1340 0.1325 0.1311 0.1296 0.1282 0.1268 0.1254 0.1240 0.1226
950 0.1213 0.1199 0.1186 0.1173 0.1160 0.1147 0.1134 0.1122 0.1110 0.1097
63Ni (Nickel-63 / Ni-63) Half-life: 100.1 years *

year\month 0 1 2 3 4 5 6 7 8 9 10 11
0 1.0000 0.9994 0.9988 0.9983 0.9977 0.9971 0.9965 0.9960 0.9954 0.9948 0.9942 0.9937
1 0.9931 0.9925 0.9920 0.9914 0.9908 0.9902 0.9897 0.9891 0.9885 0.9880 0.9874 0.9868
2 0.9862 0.9857 0.9851 0.9845 0.9840 0.9834 0.9828 0.9823 0.9817 0.9811 0.9806 0.9800
3 0.9794 0.9789 0.9783 0.9777 0.9772 0.9766 0.9761 0.9755 0.9749 0.9744 0.9738 0.9732
4 0.9727 0.9721 0.9716 0.9710 0.9704 0.9699 0.9693 0.9688 0.9682 0.9676 0.9671 0.9665
5 0.9660 0.9654 0.9649 0.9643 0.9637 0.9632 0.9626 0.9621 0.9615 0.9610 0.9604 0.9599
6 0.9593 0.9588 0.9582 0.9576 0.9571 0.9565 0.9560 0.9554 0.9549 0.9543 0.9538 0.9532
7 0.9527 0.9521 0.9516 0.9510 0.9505 0.9499 0.9494 0.9488 0.9483 0.9477 0.9472 0.9467
8 0.9461 0.9456 0.9450 0.9445 0.9439 0.9434 0.9428 0.9423 0.9418 0.9412 0.9407 0.9401
9 0.9396 0.9390 0.9385 0.9380 0.9374 0.9369 0.9363 0.9358 0.9353 0.9347 0.9342 0.9336
10 0.9331 0.9326 0.9320 0.9315 0.9309 0.9304 0.9299 0.9293 0.9288 0.9283 0.9277 0.9272
11 0.9267 0.9261 0.9256 0.9251 0.9245 0.9240 0.9235 0.9229 0.9224 0.9219 0.9213 0.9208
12 0.9203 0.9197 0.9192 0.9187 0.9181 0.9176 0.9171 0.9166 0.9160 0.9155 0.9150 0.9144
13 0.9139 0.9134 0.9129 0.9123 0.9118 0.9113 0.9108 0.9102 0.9097 0.9092 0.9087 0.9081
14 0.9076 0.9071 0.9066 0.9060 0.9055 0.9050 0.9045 0.9039 0.9034 0.9029 0.9024 0.9019
15 0.9013 0.9008 0.9003 0.8998 0.8993 0.8987 0.8982 0.8977 0.8972 0.8967 0.8962 0.8956
16 0.8951 0.8946 0.8941 0.8936 0.8931 0.8925 0.8920 0.8915 0.8910 0.8905 0.8900 0.8895
17 0.8889 0.8884 0.8879 0.8874 0.8869 0.8864 0.8859 0.8854 0.8849 0.8843 0.8838 0.8833
18 0.8828 0.8823 0.8818 0.8813 0.8808 0.8803 0.8798 0.8793 0.8787 0.8782 0.8777 0.8772
19 0.8767 0.8762 0.8757 0.8752 0.8747 0.8742 0.8737 0.8732 0.8727 0.8722 0.8717 0.8712
22Na (Point gamma standard spectrometry sources set / "OSGI-R"-set: Sodium-22 / Na-22) Half-life: 2.6027 years **

days 0 10 20 30 40 50 60 70 80 90
0 1.0000 0.9927 0.9855 0.9783 0.9712 0.9642 0.9572 0.9502 0.9433 0.9364
100 0.9296 0.9229 0.9162 0.9095 0.9029 0.8963 0.8898 0.8833 0.8769 0.8705
200 0.8642 0.8579 0.8517 0.8455 0.8394 0.8333 0.8272 0.8212 0.8152 0.8093
300 0.8034 0.7976 0.7918 0.7860 0.7803 0.7746 0.7690 0.7634 0.7579 0.7523
400 0.7469 0.7414 0.7361 0.7307 0.7254 0.7201 0.7149 0.7097 0.7045 0.6994
500 0.6943 0.6893 0.6843 0.6793 0.6743 0.6694 0.6646 0.6597 0.6550 0.6502
600 0.6455 0.6408 0.6361 0.6315 0.6269 0.6223 0.6178 0.6133 0.6089 0.6044
700 0.6000 0.5957 0.5914 0.5871 0.5828 0.5785 0.5743 0.5702 0.5660 0.5619
800 0.5578 0.5538 0.5497 0.5457 0.5418 0.5378 0.5339 0.5300 0.5262 0.5224
900 0.5186 0.5148 0.5111 0.5073 0.5037 0.5000 0.4964 0.4927 0.4892 0.4856
1000 0.4821 0.4786 0.4751 0.4716 0.4682 0.4648 0.4614 0.4581 0.4547 0.4514
1100 0.4482 0.4449 0.4417 0.4385 0.4353 0.4321 0.4290 0.4258 0.4227 0.4197
1200 0.4166 0.4136 0.4106 0.4076 0.4046 0.4017 0.3988 0.3959 0.3930 0.3901
1300 0.3873 0.3845 0.3817 0.3789 0.3762 0.3734 0.3707 0.3680 0.3653 0.3627
1400 0.3601 0.3574 0.3548 0.3523 0.3497 0.3472 0.3446 0.3421 0.3396 0.3372
1500 0.3347 0.3323 0.3299 0.3275 0.3251 0.3227 0.3204 0.3181 0.3157 0.3134
1600 0.3112 0.3089 0.3067 0.3044 0.3022 0.3000 0.2978 0.2957 0.2935 0.2914
1700 0.2893 0.2872 0.2851 0.2830 0.2810 0.2789 0.2769 0.2749 0.2729 0.2709
1800 0.2689 0.2670 0.2650 0.2631 0.2612 0.2593 0.2574 0.2555 0.2537 0.2518
1900 0.2500 0.2482 0.2464 0.2446 0.2428 0.2410 0.2393 0.2375 0.2358 0.2341
85Sr (Strontium-85 / Sr-85) Half-life: 64.85 days

days 0 1 2 3 4 5 6 7 8 9
0 1.0000 0.9894 0.9788 0.9684 0.9581 0.9480 0.9379 0.9279 0.9180 0.9083
10 0.8986 0.8891 0.8796 0.8703 0.8610 0.8519 0.8428 0.8338 0.8250 0.8162
20 0.8075 0.7989 0.7905 0.7821 0.7737 0.7655 0.7574 0.7493 0.7414 0.7335
30 0.7257 0.7180 0.7103 0.7028 0.6953 0.6879 0.6806 0.6734 0.6662 0.6591
40 0.6521 0.6452 0.6383 0.6315 0.6248 0.6182 0.6116 0.6051 0.5987 0.5923
50 0.5860 0.5798 0.5736 0.5675 0.5615 0.5555 0.5496 0.5438 0.5380 0.5323
60 0.5266 0.5210 0.5155 0.5100 0.5046 0.4992 0.4939 0.4886 0.4834 0.4783
70 0.4732 0.4682 0.4632 0.4583 0.4534 0.4486 0.4438 0.4391 0.4344 0.4298
80 0.4252 0.4207 0.4163 0.4118 0.4075 0.4031 0.3988 0.3946 0.3904 0.3862
90 0.3821 0.3781 0.3741 0.3701 0.3661 0.3623 0.3584 0.3546 0.3508 0.3471
100 0.3434 0.3398 0.3361 0.3326 0.3290 0.3255 0.3221 0.3186 0.3153 0.3119
110 0.3086 0.3053 0.3021 0.2989 0.2957 0.2925 0.2894 0.2863 0.2833 0.2803
120 0.2773 0.2744 0.2714 0.2686 0.2657 0.2629 0.2601 0.2573 0.2546 0.2519
130 0.2492 0.2465 0.2439 0.2413 0.2388 0.2362 0.2337 0.2312 0.2288 0.2263
140 0.2239 0.2216 0.2192 0.2169 0.2146 0.2123 0.2100 0.2078 0.2056 0.2034
150 0.2012 0.1991 0.1970 0.1949 0.1928 0.1908 0.1887 0.1867 0.1847 0.1828
160 0.1808 0.1789 0.1770 0.1751 0.1733 0.1714 0.1696 0.1678 0.1660 0.1643
170 0.1625 0.1608 0.1591 0.1574 0.1557 0.1540 0.1524 0.1508 0.1492 0.1476
180 0.1460 0.1445 0.1429 0.1414 0.1399 0.1384 0.1370 0.1355 0.1341 0.1326
190 0.1312 0.1298 0.1285 0.1271 0.1257 0.1244 0.1231 0.1218 0.1205 0.1192
119mSn (Tin-119m / Sn-119m) Half-life: 293.1 days

days 0 5 10 15 20 25 30 35 40 45
0 1.0000 0.9882 0.9766 0.9651 0.9538 0.9426 0.9315 0.9206 0.9097 0.8990
50 0.8885 0.8780 0.8677 0.8575 0.8474 0.8375 0.8276 0.8179 0.8083 0.7988
100 0.7894 0.7801 0.7709 0.7619 0.7529 0.7441 0.7353 0.7267 0.7181 0.7097
150 0.7014 0.6931 0.6850 0.6769 0.6690 0.6611 0.6533 0.6456 0.6381 0.6306
200 0.6231 0.6158 0.6086 0.6014 0.5944 0.5874 0.5805 0.5736 0.5669 0.5602
250 0.5536 0.5471 0.5407 0.5344 0.5281 0.5219 0.5157 0.5097 0.5037 0.4978
300 0.4919 0.4861 0.4804 0.4748 0.4692 0.4637 0.4582 0.4528 0.4475 0.4422
350 0.4370 0.4319 0.4268 0.4218 0.4169 0.4120 0.4071 0.4023 0.3976 0.3929
400 0.3883 0.3837 0.3792 0.3748 0.3704 0.3660 0.3617 0.3575 0.3533 0.3491
450 0.3450 0.3409 0.3369 0.3330 0.3291 0.3252 0.3214 0.3176 0.3139 0.3102
500 0.3065 0.3029 0.2994 0.2958 0.2924 0.2889 0.2855 0.2822 0.2789 0.2756
550 0.2723 0.2691 0.2660 0.2629 0.2598 0.2567 0.2537 0.2507 0.2478 0.2448
600 0.2420 0.2391 0.2363 0.2335 0.2308 0.2281 0.2254 0.2227 0.2201 0.2175
650 0.2150 0.2125 0.2100 0.2075 0.2051 0.2026 0.2003 0.1979 0.1956 0.1933
700 0.1910 0.1888 0.1865 0.1844 0.1822 0.1800 0.1779 0.1758 0.1738 0.1717
750 0.1697 0.1677 0.1657 0.1638 0.1619 0.1600 0.1581 0.1562 0.1544 0.1526
800 0.1508 0.1490 0.1473 0.1455 0.1438 0.1421 0.1405 0.1388 0.1372 0.1356
850 0.1340 0.1324 0.1308 0.1293 0.1278 0.1263 0.1248 0.1233 0.1219 0.1204
900 0.1190 0.1176 0.1162 0.1149 0.1135 0.1122 0.1109 0.1096 0.1083 0.1070
950 0.1058 0.1045 0.1033 0.1021 0.1009 0.0997 0.0985 0.0974 0.0962 0.0951
44Ti (Point gamma standard spectrometry sources set / "OSGI-R"-set: Titanium-44 / Ti-44) Half-life: 60.0 years *

Month\Years 0 1 2 3 4 5 6 7 8 9 10 11
0 1.0000 0.9990 0.9981 0.9971 0.9962 0.9952 0.9942 0.9933 0.9923 0.9914 0.9904 0.9895
1 0.9885 0.9876 0.9866 0.9857 0.9847 0.9838 0.9828 0.9819 0.9809 0.9800 0.9790 0.9781
2 0.9772 0.9762 0.9753 0.9743 0.9734 0.9725 0.9715 0.9706 0.9697 0.9687 0.9678 0.9669
3 0.9659 0.9650 0.9641 0.9632 0.9622 0.9613 0.9604 0.9594 0.9585 0.9576 0.9567 0.9558
4 0.9548 0.9539 0.9530 0.9521 0.9512 0.9503 0.9493 0.9484 0.9475 0.9466 0.9457 0.9448
5 0.9439 0.9430 0.9421 0.9412 0.9402 0.9393 0.9384 0.9375 0.9366 0.9357 0.9348 0.9339
6 0.9330 0.9321 0.9312 0.9303 0.9294 0.9286 0.9277 0.9268 0.9259 0.9250 0.9241 0.9232
7 0.9223 0.9214 0.9205 0.9197 0.9188 0.9179 0.9170 0.9161 0.9152 0.9144 0.9135 0.9126
8 0.9117 0.9108 0.9100 0.9091 0.9082 0.9073 0.9065 0.9056 0.9047 0.9039 0.9030 0.9021
9 0.9013 0.9004 0.8995 0.8987 0.8978 0.8969 0.8961 0.8952 0.8943 0.8935 0.8926 0.8918
10 0.8909 0.8900 0.8892 0.8883 0.8875 0.8866 0.8858 0.8849 0.8841 0.8832 0.8824 0.8815
11 0.8807 0.8798 0.8790 0.8781 0.8773 0.8764 0.8756 0.8748 0.8739 0.8731 0.8722 0.8714
12 0.8706 0.8697 0.8689 0.8680 0.8672 0.8664 0.8655 0.8647 0.8639 0.8630 0.8622 0.8614
13 0.8606 0.8597 0.8589 0.8581 0.8572 0.8564 0.8556 0.8548 0.8539 0.8531 0.8523 0.8515
14 0.8507 0.8498 0.8490 0.8482 0.8474 0.8466 0.8458 0.8450 0.8441 0.8433 0.8425 0.8417
15 0.8409 0.8401 0.8393 0.8385 0.8377 0.8369 0.8361 0.8352 0.8344 0.8336 0.8328 0.8320
16 0.8312 0.8304 0.8296 0.8288 0.8280 0.8272 0.8264 0.8257 0.8249 0.8241 0.8233 0.8225
17 0.8217 0.8209 0.8201 0.8193 0.8185 0.8177 0.8170 0.8162 0.8154 0.8146 0.8138 0.8130
18 0.8123 0.8115 0.8107 0.8099 0.8091 0.8084 0.8076 0.8068 0.8060 0.8052 0.8045 0.8037
19 0.8029 0.8021 0.8014 0.8006 0.7998 0.7991 0.7983 0.7975 0.7968 0.7960 0.7952 0.7945
88Y (Yttrium-88 / Y-88) Half-life: 106.626 days

days 0 2 4 6 8 10 12 14 16 18
0 1.0000 0.9871 0.9743 0.9617 0.9493 0.9371 0.9250 0.9130 0.9012 0.8896
20 0.8781 0.8667 0.8555 0.8445 0.8336 0.8228 0.8122 0.8017 0.7913 0.7811
40 0.7710 0.7611 0.7512 0.7415 0.7320 0.7225 0.7132 0.7040 0.6949 0.6859
60 0.6770 0.6683 0.6596 0.6511 0.6427 0.6344 0.6262 0.6181 0.6101 0.6023
80 0.5945 0.5868 0.5792 0.5717 0.5644 0.5571 0.5499 0.5428 0.5358 0.5288
100 0.5220 0.5153 0.5086 0.5020 0.4956 0.4892 0.4828 0.4766 0.4704 0.4644
120 0.4584 0.4524 0.4466 0.4408 0.4351 0.4295 0.4240 0.4185 0.4131 0.4077
140 0.4025 0.3973 0.3922 0.3871 0.3821 0.3771 0.3723 0.3675 0.3627 0.3580
160 0.3534 0.3488 0.3443 0.3399 0.3355 0.3312 0.3269 0.3227 0.3185 0.3144
180 0.3103 0.3063 0.3024 0.2985 0.2946 0.2908 0.2870 0.2833 0.2797 0.2761
200 0.2725 0.2690 0.2655 0.2621 0.2587 0.2553 0.2520 0.2488 0.2456 0.2424
220 0.2393 0.2362 0.2331 0.2301 0.2271 0.2242 0.2213 0.2185 0.2156 0.2128
240 0.2101 0.2074 0.2047 0.2021 0.1995 0.1969 0.1943 0.1918 0.1893 0.1869
260 0.1845 0.1821 0.1797 0.1774 0.1751 0.1729 0.1706 0.1684 0.1663 0.1641
280 0.1620 0.1599 0.1578 0.1558 0.1538 0.1518 0.1498 0.1479 0.1460 0.1441
300 0.1422 0.1404 0.1386 0.1368 0.1350 0.1333 0.1316 0.1299 0.1282 0.1265
320 0.1249 0.1233 0.1217 0.1201 0.1186 0.1170 0.1155 0.1140 0.1126 0.1111
340 0.1097 0.1083 0.1069 0.1055 0.1041 0.1028 0.1014 0.1001 0.0988 0.0976
360 0.0963 0.0951 0.0938 0.0926 0.0914 0.0902 0.0891 0.0879 0.0868 0.0857
380 0.0846 0.0835 0.0824 0.0813 0.0803 0.0792 0.0782 0.0772 0.0762 0.0752
* One month is equal to 1/12 part of a year.
** One year is equal to 365 days.
Reference data: T.V.Golashvili, V.P.Chechev, A.A.Lbov, V.M.Kupriyanov, A.P.Demidov "Nuclide Guide-2". Edited by V.N.Mikhajlov, 2-nd edition, revised, Moscow, ATOMINFORM, 2002.

   News
04.18.2011
Our Tin-119m sources are available again!

08.23.2010
ISO 9001:2008 Qality Management System
ISO 9001:2008
RITVERC GmbH has succesfully passed recertification audit of ISO-9001 based Quality Management System

12.23.2008
Source strength class increased
GAm1.14, GBa3.14 and GCo7.14 sources are given a new strength class C66544 (in accordance with ISO classification).

11.10.2008
Package for Mössbauer sources improved
An insert is developed to fix Mössbauer sources in the container.

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