Antiprotonic hydrogen: From atomic capture to annihilation

We present a model of the cascade of antiprotonic hydrogen (anti pp) atoms. Stark mixing and external Auger rates are calculated by simulation of the collision processes between anti pp atom and hydrogen. The calculations show that the results are insensitive to variations of the anti pp velocity which is not calculated within the model. Therefore no free parameter is needed. The model describes the intensities of the characteristic lines, the fractional annihilation of S- and P-states, and the cascade time. These results agree with recent experiment data obtained at LEAR. (orig.)