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CADMIUM-109

Nuclear-physical characteristics

Decay mode

Electron capture (100%)

Half-life

461,4 days

Basic energy of gamma
and X-rays, keV
(quantum yield, %)

KX 22,57 (102,21)
88,03 (3,7)

Production

Production process:

natural silver or enriched silver-109 target radiation treatment
by a cyclotron

Nuclear reactions:

109Ag (p, n) 109Cd

Reprocessing:

target dissolution, ion-exchange emission

Product characteristics

Chemical form

Cd(II) chloride in 0,1-0,5 M HCl

Specific activity

≥ 500 mBq/mg

Radionuclide purity

min. 99,9%

Volumetric activity

≥ 10 mBq/ml

Minimum single-unit package

1 mBq

Maximum single-unit package

2000 mBq


Scope of application
Production of standards and calibration sources for radiometric equipment, production of sources for X-ray radiometric analysis, application for various scientific research activities as a radioactive indicator.

DECAY CHART
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 0,9277 0,9207 0,9138 0,9070 0,9002 0,8935 0,8868 0,8801 0,8736 0,8670
100 0,8605 0,8541 0,8477 0,8414 0,8351 0,8288 0,8226 0,8165 0,8104 0,8043
150 0,7983 0,7923 0,7864 0,7805 0,7747 0,7689 0,7631 0,7574 0,7517 0,7461
200 0,7405 0,7350 0,7295 0,7240 0,7186 0,7132 0,7079 0,7026 0,6973 0,6921
250 0,6870 0,6818 0,6767 0,6717 0,6666 0,6616 0,6567 0,6518 0,6469 0,6421
300 0,6373 0,6325 0,6278 0,6231 0,6184 0,6138 0,6092 0,6046 0,6001 0,5956
350 0,5912 0,5867 0,5823 0,5780 0,5737 0,5694 0,5651 0,5609 0,5567 0,5525
400 0,5484 0,5443 0,5402 0,5362 0,5322 0,5282 0,5242 0,5203 0,5164 0,5125
450 0,5087 0,5049 0,5011 0,4974 0,4937 0,4900 0,4863 0,4827 0,4790 0,4755
500 0,4719 0,4684 0,4649 0,4614 0,4579 0,4545 0,4511 0,4477 0,4444 0,4411
550 0,4378 0,4345 0,4312 0,4280 0,4248 0,4216 0,4185 0,4153 0,4122 0,4092
600 0,4061 0,4031 0,4000 0,3970 0,3941 0,3911 0,3882 0,3853 0,3824 0,3796
650 0,3767 0,3739 0,3711 0,3683 0,3656 0,3628 0,3601 0,3574 0,3547 0,3521
700 0,3495 0,3468 0,3443 0,3417 0,3391 0,3366 0,3341 0,3316 0,3291 0,3266
750 0,3242 0,3218 0,3193 0,3170 0,3146 0,3122 0,3099 0,3076 0,3053 0,3030
800 0,3007 0,2985 0,2962 0,2940 0,2918 0,2896 0,2875 0,2853 0,2832 0,2811
850 0,2790 0,2769 0,2748 0,2728 0,2707 0,2687 0,2667 0,2647 0,2627 0,2607
900 0,2588 0,2568 0,2549 0,2530 0,2511 0,2492 0,2474 0,2455 0,2437 0,2419
950 0,2401 0,2383 0,2365 0,2347 0,2330 0,2312 0,2295 0,2278 0,2261 0,2244