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Line 48: ===Colliding beams=== Things can be ~~improved~~ somewhat improved by using two accelerators firing at each other instead of a single accelerator and a non-moving target. In this case, the second fuel, boron in the example above, is already ionized, so the "ionization drag" seen by the protons entering the solid block is eliminated.{{sfn\|Ruggiero\|1992\|p=4}} In this case, however, the concept of a characteristic interaction length has no meaning as there is no solid target. Instead, for these types of system, the typical measure is to use the [[Luminosity (scattering theory)\|beam luminosity]], L, a term that combines the reaction cross-section with the number of events. The term is normally defined as:

Colliding beam fusion: Difference between revisions