Decay Simulator: Gold-175
General data
| Element name | Gold |
|---|---|
| Chemical symbol | Au |
| Atomic number Z | 79 |
| Isotope name (symbol) | Gold-175 (Au-175) |
| Neutron number N | 96 |
| Mass number A=Z+N | 175 |
Interactive radioactive decay simulation of Gold-175: atom-by-atom decay, full decay chain, charts of nuclei count and activity.
| Half-life | 201 ms |
|---|
Radioactive decay series
- Gold-175 201 ms
- Iridium-171 3.2 s · 90.0%
- Rhenium-167 5.9 s · 13.5%
- Platinum-175 2.43 s · 10.0%
- Osmium-171 8.3 s · 82.9%
- Tungsten-167 19.9 s · 14.9%
- Tantalum-167 80 s · 14.9%
- Hafnium-167 2.05 min · 14.9%
- Lutetium-167 52.0 min · 14.9%
- Ytterbium-167 17.5 min · 14.9%
- Thulium-167 9.28 d · 14.9%
- Erbium-167 stable · 14.9%
- Iridium-175 8.9 s · 3.6%
- Rhenium-171 15.2 s · 81.4%
- Tungsten-171 2.39 min · 81.4%
- Tantalum-171 23.3 min · 81.4%
- Hafnium-171 12.1 h · 81.4%
- Lutetium-171 8.25 d · 81.4%
- Ytterbium-171 stable · 81.4%
- Osmium-175 1.4 min · 3.6%
- Rhenium-175 5.89 min · 3.6%
- Tungsten-175 35.2 min · 3.6%
- Tantalum-175 10.5 h · 3.6%
- Hafnium-175 70.67 d · 3.6%
- Lutetium-175 stable · 3.6%
- Tantalum-163 10.7 s · 0.14%
- Hafnium-163 40.0 s · 0.14%
- Lutetium-163 4.01 min · 0.14%
- Ytterbium-163 11.1 min · 0.14%
- Thulium-163 1.810 h · 0.14%
- Erbium-163 75.0 min · 0.14%
- Holmium-163 4570 a · 0.14%
- Dysprosium-163 stable · 0.14%
How to read the simulation
Grid: each pixel is one atom of the starting isotope. When an atom decays, the pixel takes the colour of the decay product - in decay series mode the product can decay further. The moment each atom decays is random, but the probability follows from the half-life, so after one T½ about half of the atoms remain, after two - about a quarter.
Chart N(t): what percentage of the sample atoms each nuclide makes up at a given moment. The line of the starting isotope falls (by half after each T½), the lines of stable products rise, and those of short-lived ones first rise, then fall.
Chart A(t): activity, i.e. the number of decays per second (becquerel, Bq). It depends on the number of atoms and on how fast they decay: for the same number of atoms, the shorter the T½, the higher the activity.
Simulation time runs faster (or slower) than real time - the time scale slider sets the multiplier. This way you can watch the decay of isotopes that live from fractions of a second to billions of years.
Well-known isotopes
- H-3 - Tritium - glowing watch hands, nuclear fusion fuel.
- C-14 - Radiocarbon dating.
- K-40 - Natural radioactivity - in bananas and in our bodies.
- Co-60 - Radiotherapy and radiation sterilization.
- I-131 - Thyroid treatment; Chernobyl fallout.
- Cs-137 - Long-lasting contamination after Chernobyl and Fukushima.
- Rn-222 - Radon in basements and mines.
- Ra-226 - The longest-lived isotope of radium - the element discovered by Marie and Pierre Curie in 1898.
- U-235 - Nuclear power plant fuel; start of the actinium series.
- U-238 - Age of the Earth; start of the uranium series.
- Pu-238 - Power source for space probes (Voyager, Curiosity rover).
- Am-241 - Ionization smoke detectors.
Data sources
- NNDC Wallet Cards 2023 - Data as of 15 October 2024 - licence: Public domain