Plutonium-241m2
Properties and data of the isotope 241m2Pu.
See also: list of Plutonium isotopes.
General data
Name of the isotope:Plutonium-241m2; Pu-241m2Symbol:241m2Pu or 241m294PuMass number A:241 (= number of nucleons)Atomic number Z:94 (= number of protons)Neutrons N:147Isotopic mass:241.0568497(12) u (atomic weight of Plutonium-241m2)
Excitation energy: 2200 keVNuclide mass:241.0052902 u (calculated nuclear mass without electrons)Mass excess:52.95515 MeVMass defect:1.95244596 u (per nucleus)Nuclear binding energy:1818.69169706 MeV (per nucleus)
7.54643858 MeV (average binding energy per nucleon)Half-life:20.5(22) μsDecay constant λ:33812.05758829 s-1Specific activity α:8.449003052322 × 10+25 Bq g-1
2.283514338465 × 10+15 Ci g-1Spin and parity:
(nuclear angular momentum)
Radioactive Decay
Half-life T½ = 20.5(22) μs respectively 2.05 × 10-5 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
SZ | div | 100 % | | |
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
Nuclear Isomer | Excitation Energy | Half-life | Spin |
---|
241Pu | | 14.329(29) a | 5/2+ |
241m1Pu | 161.6853(9) keV | 0.88(5) μs | 1/2+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 147) and isobaric (same nucleon number A = 241) with Plutonium-241m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 147 | Isobar A = 241 |
89 | 236Ac | |
90 | 237Th | |
91 | 238Pa | |
92 | 239U | 241U |
93 | 240Np | 241Np |
94 | 241Pu | 241Pu |
95 | 242Am | 241Am |
96 | 243Cm | 241Cm |
97 | 244Bk | 241Bk |
98 | 245Cf | 241Cf |
99 | 246Es | 241Es |
100 | 247Fm | 241Fm |
101 | 248Md | |
Last update: 2020-10-23
Perma link: https://www.chemlin.org/isotope/plutonium-241m2
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