Basic Info
n-XS summary
element
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Information about Americium-241:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Americium -241 is used in many smoke detectors for homes and business...
to measure levels of toxic lead in dried paint samples...
to ensure uniform thickness in rolling processes like steel
and paper production...
and to help determine where oil wells should be drilled.
Mass-Energy Data:
| Atomic Mass: | 241.056823 | ± | 0.000002 | amu |
| Excess Mass (Δ): | 52.930224 | ± | 0.001957 | MeV |
| Binding Energy: | 1817.935000 | ± | 0.001984 | MeV |
| β- Decay Energy: | -0.767357 | ± | 0.001173 | MeV |
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra,
Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
Radioactive Decay Data:
- Spin: 5/2-
- Half life: 432.2 years ( 1.36316×10+10 sec., λ = 5.08486×10-11 s-1)
- Mode of decay:
α to
(Q = 5.638 MeV)
- Mode of decay: SF
Branch ratio: 4E-10 %
Meta state at 2.200 Mev
432.2 - Half life: 1.2 µs ( 1.2×10-06 sec., λ = 577623 s-1)
- Mode of decay: SF
- Possible parent nuclides:
- β- from
- E.C. from
- α from
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)
Magnetic Dipole Moments and Electric Quadrupole Moments
| Ex(kev) | T1/2 | Spin | | m(nm) | | Q(b) | | Ref. Std. | Method | Reference |
| 0 | 432.7 y | 5/2- | | +1.58(1) | | | | | ABLS | JRNC 143 93 (90) |
| | | | +1.61(3) | | | | | AB/D | PR 144 994 (66) |
| | | | | | +3.8(1.2) | | | R | ZP D13 181 (89) |
| | | | | | +3.14(5) | | | ABLS | JRNC 143 93 (90) |
| | | | | | +4.2(13) | | | R | ZP A330 235 (88) |
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N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published. 2000 Courtesy of T. Burrows at BNL/NNDC.
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