What is the process called where ionized compounds collide with neutral gas molecules resulting in fragmentation?

The process described, where ionized compounds collide with neutral gas molecules leading to fragmentation, is known as Collision Induced Dissociation (CID). In CID, ions are accelerated in a collision cell where they collide with inert gas molecules such as argon or nitrogen. These collisions impart energy to the ions, causing them to break apart into smaller fragments. This technique is widely used in mass spectrometry to analyze the structure of ions, as the resulting fragments can provide insights into the molecular structure of the original compound.

Other terms or phrases in the options refer to different concepts. Ionization Analysis does not specifically describe the fragmentation process involved in CID. Mass Fragmentation, while it touches on the concept of fragmentation, does not identify the collision aspect required for this process. Lastly, Ionized Collision Breakage is not a standard term used in the field and would not accurately capture the nuances of CID as a recognized process in mass spectrometry. Thus, Collision Induced Dissociation is the correct and widely accepted terminology for the described phenomenon.