68-Er-157
basic
element
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68-erbium-157
- Atomic Mass: 156.9319455 +- 0.0000862 amu
- Excess Mass: -63392.333 +- 80.304 keV
- Binding Energy: 1277389.983 +- 80.304 keV
- Beta Decay Energy: B- -4481.000 +- 70.711 keV
"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.
- Spin: 3/2-
- Half life: 18.65 min
- Mode of decay: Electron capture to Ho-157
- Branch ratio: ~100.00 %
- Decay energy: 3.500 MeV
- Mode of decay: Alpha to Dy-153
- Branch ratio: <0.02 %
- Decay energy: 3.300 MeV
Meta state at 0.155 Mev
- Spin: (9/2+)
- Half life: 76 ms
- Mode of decay: IT to Er-157
- Possible parent nuclides:
- Electron capture from Tm-157
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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