Decay Simulator: Palladium-127
General data
| Element name | Palladium |
|---|---|
| Chemical symbol | Pd |
| Atomic number Z | 46 |
| Isotope name (symbol) | Palladium-127 (Pd-127) |
| Neutron number N | 81 |
| Mass number A=Z+N | 127 |
Interactive radioactive decay simulation of Palladium-127: atom-by-atom decay, full decay chain, charts of nuclei count and activity.
| Half-life | 38 ms |
|---|
Radioactive decay series
- Palladium-127 38 ms
- Silver-127 89.1 ms · 91.0%
- Cadmium-127 0.45 s · 86.0%
- Indium-127 1.087 s · 85.0%
- Tin-127 2.10 h · 84.9%
- Antimony-127 3.84 d · 84.9%
- Tellurium-127 9.35 h · 84.9%
- Iodine-127 stable · 84.9%
- Silver-126 52 ms · 9.0%
- Cadmium-126 512 ms · 13.7%
- Indium-126 1.53 s · 14.7%
- Tin-126 1.98×10⁵ a · 14.7%
- Antimony-126 12.3 d · 14.7%
- Tellurium-126 stable · 14.7%
- Cadmium-125 680 ms · 0.34%
- Indium-125 2.36 s · 0.34%
- Tin-125 9.634 d · 0.34%
- Antimony-125 2.7577 a · 0.34%
- Tellurium-125 stable · 0.34%
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