No, it can't be controlled by pressure, temperature, or any other approach.
The term is called half-life. It is the time it takes for half of the radioactive nuclei in a sample to decay.
12.5%
12.5%
not sure you're asking exactly but I think the answer your looking for is radioactive half-life
12.5%
The average time needed for half of the nuclei in a sample of a radioactive substance to undergo radioactive decay is called the "half-life." This period is a characteristic property of each radioactive isotope and varies significantly between different substances. During one half-life, the quantity of the radioactive material reduces to half of its original amount.
This is called the "half-life" of the isotope.
The time required for a radioactive mass to reduce by a factor of 2 is called the half-life. It is the time it takes for half of the radioactive nuclei in a sample to decay.
The time it takes for 50 percent of the nuclei in a radioactive sample to decay to its stable isotope is called the half-life of the radioactive element. It is a characteristic property of each radioactive isotope and can vary greatly among different elements.
The time it takes for half the atoms in a sample of a radioactive element to decay is called the half life.
Ordinary water is not radioactive, so it has no half-life.
Radioactivity is the process by which unstable atomic nuclei release energy in the form of radiation. Half-life is the time it takes for half of a radioactive substance to decay. The concept of half-life is used to measure the rate at which a radioactive substance decays and is a key parameter in understanding and monitoring radioactivity.