  This paper is a continuation of the article "The Isotopic Field-Charge
Assumption Applied to the Electromagnetic Interaction". It continues the
discussion and consequences of the extended Dirac equation in the presence of
isotopic mass and electric charges, and a kinetic gauge field. In compliance
with the author's previous papers (Darvas 2009, IJTP 2011, IJTP 2013), there
appears a second conserved Noether current in the interaction between two
electric charges in the presence of isotopic electric charges and a kinetic
field. This second conserved current involves the conservation of the isotopic
electric charge spin, and that predicts the existence of quanta of the kinetic
field (dions associated with the photons). It is concluded that with the
discussed conditions, the electromagnetic interaction should be mediated by
photons and their dion partners together. The conclusions give physical
meaning, among others, to the electric moment and to a virtual coupling spin.
