Radioactive Isotopes and Their Half-Lives - TSV

code	slug	name	description	atomicNumber	category	decayMode	halfLife_seconds	halfLife_unit	halfLife_value	massNumber	symbol
001	tellurium-128	Tellurium-128	The radioactive isotope with the longest known half-life.	52	naturally-occurring	double beta decay	6.94e+31	×10²⁴ years	2.2	128	Te-128
002	xenon-136	Xenon-136	A noble gas isotope that undergoes double beta decay.	54	naturally-occurring	double beta decay	7.51e+28	×10²¹ years	2.38	136	Xe-136
003	thorium-232	Thorium-232	The parent nuclide of the thorium series, abundantly present on Earth.	90	naturally-occurring	alpha decay	445000000000000000	×10¹⁰ years	1.41	232	Th-232
004	uranium-238	Uranium-238	The main component of natural uranium and parent nuclide of the uranium series.	92	naturally-occurring	alpha decay	141000000000000000	×10⁹ years	4.47	238	U-238
005	potassium-40	Potassium-40	A radioactive isotope of potassium widely used for rock dating.	19	naturally-occurring	beta decay / electron capture	39800000000000000	×10⁹ years	1.26	40	K-40
006	uranium-235	Uranium-235	Fissile material and the primary fuel for nuclear power generation.	92	naturally-occurring	alpha decay	22200000000000000	×10⁸ years	7.04	235	U-235
007	plutonium-244	Plutonium-244	The plutonium isotope with the longest half-life.	94	transuranic	alpha decay	2610000000000000	×10⁷ years	8.26	244	Pu-244
008	iodine-129	Iodine-129	A long-lived fission product used for geological dating.	53	fission-product	beta decay	495000000000000	×10⁷ years	1.57	129	I-129
009	aluminum-26	Aluminum-26	Produced by cosmic rays and used for meteorite dating.	13	cosmogenic	beta decay / electron capture	22600000000000	×10⁵ years	7.17	26	Al-26
010	carbon-14	Carbon-14	The most famous isotope that forms the basis of radiocarbon dating.	6	cosmogenic	beta decay	181000000000	years	5730	14	C-14
011	plutonium-239	Plutonium-239	Fissile material used in both nuclear power and weapons.	94	transuranic	alpha decay	761000000000	years	24100	239	Pu-239
012	americium-241	Americium-241	An artificial radioactive element widely used in smoke detectors.	95	transuranic	alpha decay	13600000000	years	432.2	241	Am-241
013	radium-226	Radium-226	A famous radioactive element discovered by Marie Curie, once used in medicine.	88	naturally-occurring	alpha decay	50500000000	years	1600	226	Ra-226
014	cesium-137	Cesium-137	A fission product used in medicine and industry, but also a concern for environmental contamination.	55	fission-product	beta decay	952000000	years	30.17	137	Cs-137
015	strontium-90	Strontium-90	A fission product that easily accumulates in bones, important for environmental monitoring.	38	fission-product	beta decay	909000000	years	28.8	90	Sr-90
016	tritium	Tritium	A radioactive isotope of hydrogen used in fusion research and luminous watch dials.	1	cosmogenic	beta decay	388000000	years	12.3	3	H-3
017	cobalt-60	Cobalt-60	An artificial radioactive isotope widely used as a radiation source for cancer treatment.	27	artificial	beta decay	166000000	years	5.27	60	Co-60
018	iridium-192	Iridium-192	A gamma source widely used for industrial radiographic testing.	77	artificial	beta decay	6380000	days	73.8	192	Ir-192
019	iodine-131	Iodine-131	A nuclear medicine radioisotope used for thyroid diagnosis and treatment.	53	fission-product	beta decay	695000	days	8.04	131	I-131
020	molybdenum-99	Molybdenum-99	The parent nuclide of Technetium-99m, forming the foundation of nuclear medicine diagnostics.	42	fission-product	beta decay	237000	hours	65.9	99	Mo-99
021	technetium-99m	Technetium-99m	The most widely used radioisotope in nuclear medicine diagnostics.	43	artificial	isomeric transition	21600	hours	6.01	99	Tc-99m
022	fluorine-18	Fluorine-18	A positron-emitting nuclide used in PET scans.	9	artificial	positron emission	6588	minutes	109.8	18	F-18
023	radon-222	Radon-222	A naturally occurring radioactive gas that causes indoor air pollution.	86	naturally-occurring	alpha decay	330000	days	3.82	222	Rn-222
024	polonium-210	Polonium-210	Emits strong alpha radiation and was once used in static eliminators.	84	naturally-occurring	alpha decay	12000000	days	138.4	210	Po-210
025	bismuth-213	Bismuth-213	An alpha source used in targeted alpha therapy for cancer treatment.	83	artificial	beta decay / alpha decay	2736	minutes	45.6	213	Bi-213
026	actinium-225	Actinium-225	A promising radioisotope used in targeted alpha therapy.	89	artificial	alpha decay	855000	days	9.9	225	Ac-225
027	lutetium-177	Lutetium-177	A beta source used for treating neuroendocrine tumors.	71	artificial	beta decay	575000	days	6.65	177	Lu-177
028	yttrium-90	Yttrium-90	A beta source used for liver cancer treatment (SIRT).	39	fission-product	beta decay	231000	hours	64.1	90	Y-90
029	phosphorus-32	Phosphorus-32	Used for malignant tumor treatment and biological research.	15	artificial	beta decay	1240000	days	14.3	32	P-32
030	sodium-24	Sodium-24	Used for blood flow measurement and industrial flow measurement.	11	artificial	beta decay	54000	hours	15	24	Na-24
031	gallium-68	Gallium-68	A positron-emitting nuclide used in PET scans.	31	artificial	positron emission	4080	minutes	68	68	Ga-68
032	copper-64	Copper-64	A versatile nuclide used for both PET imaging and radionuclide therapy.	29	artificial	beta decay / positron emission / electron capture	45720	hours	12.7	64	Cu-64
033	astatine-211	Astatine-211	A rare halogen element used in targeted alpha therapy.	85	artificial	alpha decay / electron capture	25920	hours	7.2	211	At-211
034	lead-212	Lead-212	An intermediate nuclide of the thorium series used in targeted radionuclide therapy.	82	naturally-occurring	beta decay	38160	hours	10.6	212	Pb-212
035	thorium-229	Thorium-229	A thorium isotope used in nuclear clock research.	90	naturally-occurring	alpha decay	232000000000	years	7340	229	Th-229
036	protactinium-231	Protactinium-231	A long-lived radionuclide used for dating ocean circulation.	91	naturally-occurring	alpha decay	1030000000000	years	32760	231	Pa-231
037	neptunium-237	Neptunium-237	The parent nuclide of the neptunium series, present in spent nuclear fuel.	93	transuranic	alpha decay	67500000000000	×10⁶ years	2.14	237	Np-237
038	curium-247	Curium-247	The curium isotope with the longest half-life.	96	transuranic	alpha decay	492000000000000	×10⁷ years	1.56	247	Cm-247
039	einsteinium-252	Einsteinium-252	The einsteinium isotope with the longest half-life.	99	transuranic	alpha decay	40800000	days	471.7	252	Es-252
040	californium-251	Californium-251	The californium isotope with the longest half-life.	98	transuranic	alpha decay	28300000000	years	898	251	Cf-251