Perhaps you should try some spelling variations:
particle acceleration » particle accelerators
particle accelerator » particle accelerators
particle acceleraton » particles acceleration, particle accelerations, pareticle acceleration

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((( particle accelerator ) OR ( particle acceleration ))) OR ( particle acceleraton )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( particle accelerator ) OR ( particle acceleration ))) or ( particle acceleraton ))".
• Adding a wildcard symbol may retrieve word variants: (((( particle accelerator ) OR ( particle acceleration ))) or ( particle acceleraton ))*.