We carry out a dynamical analysis of the collision process between two diatomic molecules in the presence of a strong magnetic field. In order to exemplify, these molecules can be, say, typically, lasing molecules as, for instance, relative to carbon-monoxide gasdynamic lasers. The molecules in question behave as quantum anharmonic oscillators after the Morse potential. In our analysis, we simulate the kinetic energy lost after the collision by assuming, equivalently, two additional molecules (fictitious and identical to the molecules which collide) with the above kinetic energy. Furthermore, the corresponding density of states is determined and associated matrix formalisms are established to calculate the total number of states.