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The radioactive collection of radium-226
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88-Ra-226
Radium-226
Half-life: 1600 year
Mode the decay: alpha right into Rn-222
Decay energy: 4.871 MeV
Subsequently γ radiation of Rn-222 in ~ 186 keV possible
86-Rn-222
Radon-222, noble gas
Half-life: 3.8235 days
Mode that decay: alpha into Po-218
Decay energy: 5.590 MeV
84-Po-218
Polonium-218
(Historically Po-218 is additionally called radium A)
Half-life: 3.10 minutes
Mode that decay: alpha into Pb-214
Probability: 99.98 %
Decay energy: 6.115 MeV
Mode that decay: beta into At-218
Probability: 0.02 %
Decay energy: 0.265 MeV
85-At-218
Astatine-218
Half-life: 1.5 seconds
Mode the decay: alpha into Bi-214
Probability: 99.90 %
Decay energy: 6.874 MeV
Mode of decay: beta right into Rn-218
Probability: 0.1 %
Decay energy: 2.883 MeV
86-Rn-218
Radon-218
Half-life: 35 milliseconds
Mode that decay: alpha into Po-214
Decay energy: 7.263 MeV
82-Pb-214
Lead-214
(Historically Pb-214 is likewise called radium B)
Half-life: 26.8 minutes
Mode of decay: beta right into Bi-214
Decay energy: 1.024 MeV
Subsequently γ radiation of Bi-214 in ~ 352 keV, 295 keV, 242 keV, 53 keV possible
83-Bi-214
Bismuth-214
(Historically Bi-214 is also called radium C)
Half-life: 19.9 minutes
Mode the decay: beta right into Po-214
Probability: 99.98 %
Decay energy: 3.272 MeV
Subsequently γ radiation of Po-214 in ~ 609 keV possible
Mode that decay: alpha right into Tl-210
Probability: 0.02 %
Decay energy: 5.617 MeV
84-Po-214
Polonium-214
(Historically Po-214 is also called radium C")
Half-life: 164.3 μs
Mode the decay: alpha into Pb-210
Decay energy: 7.833 MeV
81-Tl-210
Thallium-210
(Historically Tl-210 is additionally called radium C")
Half-life: 1.3 minutes
Mode of decay: beta into Pb-210
Decay energy: 5.484 MeV
82-Pb-210
Lead-210
(Historically Pb-210 is additionally called radium D)
Half-life: 22.3 years
Mode of decay: beta into Bi-210
Decay energy: 0.064 MeV
Mode of decay: alpha into Hg-206
Probability: 1.9-6 %
Decay energy: 3.792 MeV
83-Bi-210
Bismuth-210
(Historically Bi-210 is likewise called radium E)
Half-life: 5.013 days
Mode that decay: beta right into Po-210
Decay energy: 1.163 MeV
Mode of decay: alpha right into Tl-206
Probability: 0.00013 %
Decay energy: 5.037 MeV
84-Po-210
Polonium-210
(Historically Po-210 is also called radium F)
Half-life: 138.376 days
Mode the decay: alpha right into Pb-206
Decay energy: 5.407 MeV
82-Pb-206
Lead-206
(Historically Pb-206 is also called Radium G)
Pb-206 is the final product the the U-238 radiation series. That is stable.
The entries space taken from the NUDAT database, see:
R.R.Kinsey, et al., The NUDAT/PCNUDAT regime for atom Data, file submitted to the 9 th worldwide Symposium the Capture-Gamma_ray Spectroscopy and also Related Topics, Budapest, Hungary, Octover 1996. Data extracted from NUDAT database (Dec.18, 1997).