GERMANIUM-68

Nuclear-physical characteristics

Decay mode	Electron capture (100%)
Half-life	270,95 days
Basic energy of gamma and X-rays, keV (quantum yield, %)	KX 9,36 (43,67)
Daughter product	gallium-68
Nuclear-physical characteristics for gallium-68
Decay mode	β⁺ (89,14%) EC (10,86%)
Half-life	67,71 minutes
Basic energy of gamma and X-rays, keV (quantum yield, %)	KX 8,73 (4,55) ± 511(188,54) 1077,34 (3,22)
Energy of particles (average), keV	β⁺ 829,6
Production
Production process:	radiation treatment of a gallium-nickel alloy target by a cyclotron
Nuclear reactions:	⁶⁹Ga (p, 2n) ⁶⁸Ge
Reprocessing:	target dissolution, extraction emission
Product characteristics
Chemical form	Ge(IV) chloride in <1,0 M HCl
Specific activity	≥ 2500 mBq/mg
Radionuclide purity	min. 99,8 % (without taking into account 71Ge)
Volumetric activity	≥ 10 mBq/ml
Minimum single-unit package	1 mBq
Maximum single-unit package	150 mBq

Scope of application
Production of standards and calibration sources for radiometric equipment, positron emission tomographs, production of positron emission sources, gallium-68 generators.

DECAY CHART

Days	Days
		0	5	10	15	20	25	30	35	40	45
	0	1,0000	0,9873	0,9747	0,9624	0,9501	0,9381	0,9261	0,9144	0,9028	0,8913
	50	0,8800	0,8688	0,8577	0,8468	0,8361	0,8255	0,8150	0,8046	0,7944	0,7843
	100	0,7743	0,7645	0,7548	0,7452	0,7357	0,7264	0,7171	0,7080	0,6990	0,6901
	150	0,6814	0,6727	0,6642	0,6557	0,6474	0,6392	0,6310	0,6230	0,6151	0,6073
	200	0,5996	0,5920	0,5844	0,5770	0,5697	0,5624	0,5553	0,5482	0,5413	0,5344
	250	0,5276	0,5209	0,5143	0,5077	0,5013	0,4949	0,4886	0,4824	0,4763	0,4702
	300	0,4643	0,4584	0,4525	0,4468	0,4411	0,4355	0,4300	0,4245	0,4191	0,4138
	350	0,4085	0,4033	0,3982	0,3932	0,3882	0,3832	0,3784	0,3736	0,3688	0,3641
	400	0,3595	0,3549	0,3504	0,3460	0,3416	0,3372	0,3329	0,3287	0,3245	0,3204
	450	0,3163	0,3123	0,3083	0,3044	0,3006	0,2967	0,2930	0,2892	0,2856	0,2819
	500	0,2784	0,2748	0,2713	0,2679	0,2645	0,2611	0,2578	0,2545	0,2513	0,2481
	550	0,2449	0,2418	0,2388	0,2357	0,2327	0,2298	0,2269	0,2240	0,2211	0,2183
	600	0,2155	0,2128	0,2101	0,2074	0,2048	0,2022	0,1996	0,1971	0,1946	0,1921
	650	0,1897	0,1873	0,1849	0,1825	0,1802	0,1779	0,1757	0,1734	0,1712	0,1690
	700	0,1669	0,1648	0,1627	0,1606	0,1586	0,1566	0,1546	0,1526	0,1507	0,1488
	750	0,1469	0,1450	0,1432	0,1413	0,1395	0,1378	0,1360	0,1343	0,1326	0,1309
	800	0,1292	0,1276	0,1260	0,1244	0,1228	0,1212	0,1197	0,1182	0,1167	0,1152
	850	0,1137	0,1123	0,1108	0,1094	0,1080	0,1067	0,1053	0,1040	0,1027	0,1014