Yes, nuclear physics is a field of physics. It's a branch that focuses on the study of the nucleus of an atom, which is made up of protons and neutrons.

Here are some key areas of nuclear physics:

* Structure of the Nucleus: Understanding how protons and neutrons interact and are arranged within the nucleus.

* Nuclear Reactions: Studying how nuclei change through processes like radioactive decay, nuclear fission, and nuclear fusion.

* Nuclear Forces: Investigating the strong and weak nuclear forces that bind protons and neutrons together.

* Nuclear Energy: Exploring the use of nuclear reactions for generating electricity (nuclear power) and developing nuclear weapons.

* Nuclear Astrophysics: Applying nuclear physics principles to understand stars, supernovae, and other astrophysical phenomena.

Nuclear physics has a wide range of applications, including:

* Medicine: Radioactive isotopes used in medical imaging and treatment.

* Industry: Radioactive isotopes for industrial processes like gauging thickness or tracing materials.

* Agriculture: Radioactive isotopes for pest control and crop improvement.

* Archaeology: Radiocarbon dating to determine the age of ancient artifacts.