The proton at this point is able to carry away more than the incident kinetic energy of the deuteron since it has approached the target nucleus more closely than what is possible for an isolated proton with the same incident energy.
12.
In the O-P process, as the neutron fuses to the target nucleus, the deuteron binding force pulls the " proton end " closer than a naked proton could otherwise have approached on its own, increasing the potential energy of the positive charge.
13.
If the " neutron end " is close enough for the strong nuclear force, which only operates over very short distances, to exceed the repulsive electrostatic force on the " proton end ", fusion of a neutron with the target nucleus may begin.
14.
As the deuteron approaches the target nucleus, the positive charge is repelled by the electrostatic field until, assuming the incident energy is not sufficient for it to surmount the barrier, the " proton end " approaches to a minimum distance having climbed the Coulomb barrier as far as it can.
15.
With projectile photons, momentum and energy can be conserved only if the incident photon, X-ray or gamma, has precisely the energy corresponding to the difference in energy between the initial state of the target nucleus and some excited state that is not too different in terms of quantum properties such as spin.
16.
Because of the motion of the solar system around the center of the galaxy, many physicists believe that the particles comprising the dark matter halo will appear to originate from a particular direction in the sky roughly corresponding to the position of the constellation DRIFT, NEWAGE, and MIMAC . Additionally, dark matter searches such as COUPP and NEWAGE also use fluorine as the principal target nucleus for spin-dependent interactions.
