In most atoms only deuterons are used with additional neutrons to form its nucleus. Use of protons in nuclei of atoms, other than hydrogen, is rare due to low availability of protons. Any free proton in space will readily form an atom of hydrogen with an electron and hence availability of free protons during formation of nuclei is greatly reduced. Shells formed about both hemispheres of positrons are symmetrical about its axis. So axis of positron is also the axis of deuteron.
Deuterons are independent subatomic particles.
They float around in free space. They may develop linear or angular motions due to external forces. Deuterons have combined mass of a proton and a neutron. They have all field forces of positron. They are 3D objects with mass, matter field and inertia.