Nothing
Pressure does not have a significant effect on the rate of radioactive decay, as it is mainly influenced by the instability of the nucleus of the atom. The decay process is determined by the nuclear forces within the atom, which are not significantly affected by external pressure changes.
The rate of radioactive decay can change over time due to factors such as the type of radioactive material, environmental conditions, and any external influences. The decay rate is generally constant for a specific radioactive isotope, but it can be affected by changes in temperature, pressure, or chemical reactions. Additionally, the decay rate can also be influenced by the presence of other radioactive materials or particles that may interact with the original material.
Crushing the sample increases the surface area, which exposes more atoms to decay, leading to an increase in the rate of nuclear decay. Lowering the temperature decreases the kinetic energy of the atoms, which may decrease the rate of nuclear decay slightly due to decreased collisions among the atoms.
The rate cannot be changed.
The rate of nuclear decay increases as the temperature of a radioactive sample increases. This is due to the increased kinetic energy of the nuclei at higher temperatures, which facilitates interactions that lead to nuclear decay.
Decay rate is a chemical property, as it relates to the rate at which a substance undergoes chemical reactions or transformations over time.
How fast something decomposes
Decay rate and rate of regrowth
In general, a radioactive substance decays at a constant rate throughout time. That is not to say that the same number of decays occur per unit time. They cannot, and this is because the sample is shrinking as radioactive decay "claims" more and more of it. The decays per second is decreasing. But the rate of decay remains constant. There are some instances where slight changes in decay rates of a couple of different radioactive substances occur when we put them in extreme magnetic fields. But, by and large, the decay rates of radionuclides are constant. Additionally, we've gone to great lengths in an attempt to induce changes in the decay rates of a number of radionuclides, but they've proved themselves sublimely resistant to any manipulation by the likes of us, even as clever as we are.
Statistically carbon-14 atoms decay at a constant rate.
In the wild it will decay and turn into plantlife When buried in a coffin it will decay, but at a slower rate When mummified, it will decay at an even slower rate When air-locked (stuck in tar, wrapped up, etc.) it won't decay at all
Statistically carbon-14 atoms decay at a constant rate.