# Level After Decay of Radioactive Isotope

• dlbi
In summary, the level after decay of a radioactive isotope refers to the remaining amount of the isotope after it undergoes radioactive decay. This level is determined by the isotope's half-life, which is the time it takes for half of the original amount to decay. It is important because it can be used to determine the age of materials and has various applications. The level after decay cannot be predicted with certainty, but can be estimated based on known properties. Factors such as initial amount, half-life, and external influences can affect the level after decay.
dlbi
Hello!

So I have an issue with determining the probability of a daughter isotope's nucleus being on a certain level after decay from an unstable parent isotope's nucleus on another level. For example: I have a Co-60 nucleus and it decays to a Ni-60 nucleus by B- emission. If the parent Co-60 nucleus was excited at X keV and the daughter nucleus is excited at Y keV, how do I figure out the probability of this transition occurring. Or perhaps where do I find this data?

Thanks!

dlbi said:
Hello!

So I have an issue with determining the probability of a daughter isotope's nucleus being on a certain level after decay from an unstable parent isotope's nucleus on another level. For example: I have a Co-60 nucleus and it decays to a Ni-60 nucleus by B- emission. If the parent Co-60 nucleus was excited at X keV and the daughter nucleus is excited at Y keV, how do I figure out the probability of this transition occurring. Or perhaps where do I find this data?

Thanks!
Much of the work has already been accomplished by various national and international laboratories.

Co-60
http://www.nndc.bnl.gov/chart/getdecayscheme.jsp?nucleus=60NI&dsid=60co bM decay (1925.28 d)&unc=nds

If one were to determine decay levels from scratch, one would have to do detailed gamma spectroscopy and determine the strengths or intensities of various gamma peaks.

Cs-137
http://www.nndc.bnl.gov/chart/getdecayscheme.jsp?nucleus=137BA&dsid=137cs bM decay&unc=nds

Hi there!

That's an interesting question. The probability of a transition from the parent Co-60 nucleus to the daughter Ni-60 nucleus depends on a few factors, including the energy difference between the two levels, the nuclear spin and parity of the parent and daughter nuclei, and the type of decay (e.g. beta decay, alpha decay, etc.). These probabilities are typically calculated using quantum mechanics and are often referred to as transition probabilities or decay rates.

You can find data on these probabilities in nuclear physics textbooks or online databases such as the National Nuclear Data Center. However, keep in mind that these probabilities are theoretical and may not always match up exactly with experimental data. I hope this helps!

## 1. What is the level after decay of a radioactive isotope?

The level after decay of a radioactive isotope refers to the amount of the isotope that remains after it has undergone radioactive decay, which is the process of breaking down into a more stable form.

## 2. How is the level after decay of a radioactive isotope determined?

The level after decay is determined by the half-life of the isotope, which is the amount of time it takes for half of the original amount of the isotope to decay. The longer the half-life, the more of the isotope will remain after decay.

## 3. Why is the level after decay of a radioactive isotope important?

The level after decay is important because it can be used to determine the age of rocks, fossils, and other materials. It is also used in medical and environmental applications, such as in radiometric dating and radiation therapy.

## 4. Can the level after decay of a radioactive isotope be predicted?

The level after decay cannot be predicted with certainty, as it depends on the specific isotope and its half-life. However, scientists can make educated estimates based on the known properties of the isotope.

## 5. What factors can affect the level after decay of a radioactive isotope?

The level after decay can be affected by the initial amount of the isotope, the half-life of the isotope, and any external factors that may influence the decay process, such as temperature, pressure, and exposure to other materials.

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