In ordinary water, each hydrogen atom has just a single proton in its nucleus. In heavy water, each hydrogen atom is indeed heavier, with a neutron as well as a proton in its nucleus. This isotope ...

However, about 1 % of the carbon in the Earth’s biosphere has 6 protons and 7 neutrons (13C) forming the heavy stable isotope of this important element. Stable isotopes do not decay into other ...

The strong interaction binds neutrons and protons together to atomic nuclei ... as present in the inner part of heavy nuclei. A theory developed in Darmstadt by Dr. Stefan Typel predicts that such a ...