element
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Information about Erbium-157:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 156.931946 | ± | 0.000086 | amu |
| Excess Mass (Δ): | -63.392333 | ± | 0.080304 | MeV |
| Binding Energy: | 1277.389983 | ± | 0.080304 | MeV |
| β- Decay Energy: | -4.481000 | ± | 0.070711 | 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: 3/2-
- Half life: 18.65 min ( 1119 sec., λ = 0.000619434 s-1)
- Mode of decay:
E.C. to
(Q = 3.500 MeV)
Branch ratio: ~100.00 %
- Mode of decay: α to
(Q = 3.300 MeV)
Branch ratio: <0.02 %
Meta state at 0.155 Mev
- Spin: (9/2+)
18.65
- Half life: 76 ms ( 0.076 sec., λ = 9.12036 s-1)
- Mode of decay: γ (IT) to
(Q = 0.155 MeV)
- Possible parent nuclides:
- E.C. 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 | 25 m | 3/2- | | -0.412(3) | | | | [167Er] | CFBLS | Cf85Bomb 175 (85) |
| | | | | | +0.92(2) | | [167Er] | CFBLS | Cf85Bomb 175 (85) |
| 266+x | 54 ps | 17/2+ | | 0.4(4) | | | | | IAPAD | PRL 32 1380 (74) |
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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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