Only unstable isotopes have a half life period. It is defined as the time in which half the isotopes decay.

Purified comes into equilibrium with its decay products after about a half of year.

It has a half life of 10.756 years and a maximum decay energy of 687 keV.

It's going to decay into protactinium 233, which has a half life of about a month.

Explosion decay

Orbital decay

Decay Mode

Decay Energy

Societal decay.

That's a long time you're going to be waiting for that to decay.

The decay energy is the energy released by a nuclear decay.

I call it the decay because it's a natural fundamental decay like uranium, plutonium, and everything else when they decay.

Internet users preserve art because photographed walls neither wash away, nor decay with time.

Fruits decay in the sun.

Fruits tend to decay soon.

Energy and Mode of Decay

Energy and Mode of Decay

In between decay and life.

So, for the first time, we call the, euh, decay of fundamental, Initial Fundamental Plasma, neutron.

Half past one, time for dinner!'

He talks crazy half the time.

One is, for instance, technetium is a radioactive element with a decay time of 4.2 million years.

One is, for instance, technetium is a radioactive element with a decay time of 4.2 million years.

The apple has begun to decay.

The apple has begun to decay.

It has been in decay since.

That decay heat continued to build.

Sometimes reading took up half his time.

Journey time is about half an hour.

It's half an hour till closing time.

Some isotopes are known to emit particle radiation under the process of radioactive decay. Each decay transformation has a typical energy release, which is listed along with the mode of decay.

They remain in the salt and they decay in the salt until they give off all their decay heat.

It may even accelerate Russia s internal decay.

It was old and beginning to decay.

Two great civilizations slowly fell into decay.

The K2 must decay into three pions.

Date of decay 19 May 1980 GMT

Date of decay 29 June 1980 GMT

Date of decay 12 May 1983 GMT

It's on the U 233 decay chain.

We've defeated occupation, famine, decay and typhus.

This will utter decay, disintegrate heroic temper.

Then it will decay over about a month to uranium 233, which has a half life of about 160,000 years, and is much less radioactive.

There's a time lag of half an hour.

218Rn and 222Rn are intermediate steps in the decay chain for 238U, 219Rn is an intermediate step in the decay chain for 235U and 220Rn occurs in the decay chain for 232Th.