Complex sentence: The electrons created in these new events also drift toward the readout electrode and can create further ion pairs themselves, and a cascade of ion pairs can be created; known as a Townsend avalanche.
Split into simpler sentences: The electrons created in these new events also drift toward the readout electrode and can create further ion pairs themselves. In this manner, a cascade of ion pairs can be created; this is known as a Townsend avalanche.