Isotope: Lutetium-151
General data
| Element name | Lutetium |
|---|---|
| Chemical symbol | Lu |
| Atomic number Z | 71 |
| Isotope name (symbol) | Lutetium-151 (Lu-151) |
| Neutron number N | 80 |
| Mass number A=Z+N | 151 |
Ground state
| Half-life | 79 ± 1 ms |
|---|---|
| Spin / Parity | 11/2- |
| Mass excess | -30300 ± 300 keV (S) |
Decay branches
EC/β⁺ 0% p 0%Isomers
| Isomer | Energy | Half-life | Spin / Parity | Decay branches |
|---|---|---|---|---|
| Isomer 1 | 62 ± 5 keV | 16.0 ± 0.5 μs | 3/2+ | p 100% |
Produced by decay of
NNDC data contain no decay that leads to this isotope.
Many isotopes are also produced, often mainly, in nuclear reactions (e.g. Co-60 from Co-59 by neutron capture, C-14 from nitrogen-14 in the atmosphere) and in fission (e.g. Cs-137, I-131) - those routes are not listed here.
Radioactive decay series
- Lutetium-151 79 ms
- Ytterbium-151 1.6 s · 50.0%
- Ytterbium-150 unknown · 50.0%
- Thulium-151 4.17 s · 50.0%
- Thulium-150 2.20 s · 50.0%
- Erbium-150 18.7 s · 50.0%
- Erbium-151 23.5 s · 50.0%
- Holmium-150 77 s · 50.0%
- Holmium-151 35.2 s · 50.0%
- Dysprosium-150 7.17 min · 50.0%
- Dysprosium-151 18.0 min · 39.0%
- Terbium-151 17.609 h · 36.8%
- Gadolinium-151 124.5 d · 36.8%
- Europium-151 4.6×10¹⁸ a · 36.8%
- Promethium-147 2.62344 a · 36.8%
- Terbium-150 3.48 h · 31.5%
- Gadolinium-150 1.79×10⁶ a · 31.5%
- Gadolinium-146 48.27 d · 18.5%
- Europium-146 4.61 d · 18.5%
- Samarium-146 6.8×10⁷ a · 50.0%
- Neodymium-142 stable · 50.0%
- Terbium-147 1.64 h · 11.0%
- Gadolinium-147 38.06 h · 13.2%
- Europium-147 24.1 d · 13.2%
- Samarium-147 1.068×10¹¹ a · 50.0%
- Neodymium-143 stable · 50.0%
Rare branches (below 0.01%)
Rare branches are transformations that occur in fewer than 0.01% of decays, e.g. double beta decay or cluster emission. The nuclides they produce are practically absent from a sample, so they are hidden by default to keep the main path clear. In this series: branches - 1, nuclides - 1.
- Promethium-143 265 d · 2.9×10⁻⁴%
Decay notation
| Notation | Name | On the chart | Description |
|---|---|---|---|
| α | alpha decay | Alpha decay is the emission of a helium nucleus (2 protons + 2 neutrons): Z−2, A−4. | |
| β⁻, 2β⁻ | beta-minus decay | In beta-minus decay a neutron turns into a proton and the nucleus emits an electron: Z+1, A unchanged. 2β⁻ is double beta decay. | |
| EC, EC/β⁺ | electron capture / beta-plus decay | A proton turns into a neutron: the nucleus captures a shell electron (EC) or emits a positron (β⁺): Z−1, A unchanged. | |
| p, 2p, 3p | proton emission | Proton emission is the ejection of a proton from the nucleus: Z−1, A−1. 2p, 3p - two, three protons. | |
| n, 2n…4n | neutron emission | Neutron emission is the ejection of a neutron from the nucleus: A−1, Z unchanged. 2n…4n - several neutrons. | |
| ¹⁴C, ²⁴Ne… | cluster emission | Cluster emission is the ejection of a light nucleus, e.g. ¹⁴C, ²⁰O, ²⁴Ne, ²⁸Mg, ³⁴Si. It is a very rare transformation. | |
| IT | isomeric transition | An isomeric transition takes a nucleus from an excited state (an isomer, e.g. Pa-234m) to the ground state, usually emitting a γ photon: Z and A unchanged. | |
| β⁻n, ECp, ECα… | delayed emission | Delayed emission is the emission of a particle (n, p or α) right after β⁻ decay or electron capture. The arrow has the colour of the emitted particle and its label shows the transformation, e.g. “β⁻n 63%”. | |
| SF | spontaneous fission | no arrow | Spontaneous fission is the splitting of a nucleus into two fragments of random masses. There is no single daughter, so the chart shows no arrow - it is listed in the decay branches and in the tile tooltip. |
Data sources
- NNDC Wallet Cards 2023 - Data as of 15 October 2024 - licence: Public domain