The charge radius of the deuteron is . He investigated pions and deuteron stripping theory. He was a member of the Kappa Deuteron chapter of Phi Gamma Delta fraternity. It can be produced through proton or deuteron irradiation of nautral thorium. For nucleon pairs (the deuteron), "a" and "c" represent proton and neutron. The nucleus of deuterium is called a deuteron. Oxygen-15 is synthesized through deuteron bombardment of nitrogen-14 using a cyclotron. Psi Deuteron at UCLA was rechartered, as well as at Hobart College [Xi] (xicharge.com). The basic nucleon clusters include the deuteron [np], helion [pnp], and triton [npn]. The singlet deuteron is a virtual state, with a negative binding energy of .