THE HYDROGEN BUBBLE CHAMBER


       Seizing upon a new development to visualize particle tracks

 created by Donald Glaser and known as a bubble chamber
      Alvarez realized the device was just what was needed

 if only it could be made to function with liquid hydrogen.
      Hydrogen nuclei, which are protons, made the simplest and

 most desirable target for interactions with the particles produced by the Bevatron.

      He began a development program to build a series of small chambers, and championed the device...