What is the decay product of O-15?

The decay product of O-15 is indeed N-15. Oxygen-15 is an isotope that undergoes positron emission decay, a type of radioactive decay often involved in positron emission tomography (PET) imaging. During this process, an oxygen nucleus decays by converting a proton into a neutron while emitting a positron and a neutrino. This results in the transformation of an oxygen atom into a nitrogen atom, specifically N-15.

In PET, the knowledge of decay products is critical because these processes and the resulting isotopes are essential in creating radiopharmaceuticals for imaging. Understanding the transformation through decay helps in predicting the behavior of the radiotracers used in clinical settings.

Other options represent different isotopes that do not follow the decay process of O-15. For instance, Br-11, Kr-82, and C-13 are not formed from the decay of O-15, making them incorrect choices in this context.