55-Cs-121
basic
element
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55-cesium-121
- Atomic Mass: 120.9171836 +- 0.0000152 amu
- Excess Mass: -77142.934 +- 14.128 keV
- Binding Energy: 1010743.556 +- 14.129 keV
- Beta Decay Energy: B- -6802.021 +- 303.531 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: 128 s
- Mode of decay: Electron capture to Xe-121
Meta state at 0.068 Mev
- Spin: 9/2(+)
- Half life: 122 s
- Mode of decay: Electron capture to Xe-121
- Branch ratio: 83.00 %
- Decay energy: 5.469 MeV
- Mode of decay: IT
- Branch ratio: 17.00 %
- Decay energy: 0.068 MeV
- Possible parent nuclides:
- Electron capture from Ba-121
- EC + P from La-122
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 | 2.27 m | 3/2+ | | +0.770(4) | | | | [133Cs] | ABLS | NP A468 1 (87) |
| | | | 0.79(2) | | | | [133Cs] | AB | NP A292 144 (77) |
| | | | | | +0.838(9) st | | | ABLS | NP A468 1 (87) |
~36 | 2.02 m | 9/2+ | | +5.41(3) | | | | [133Cs] | ABLS | NP A468 1 (87) |
| | | | | | +2.69(5) st | | | ABLS | NP A468 1 (87) |
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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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