How did particle accelerators help scientists study nuclear reactions?

Particle accelerators have been essential to the study of nuclear reactions by providing a means to artificially increase the energy of charged particles, allowing scientists to probe the structure of atomic nuclei.12

Following Ernest Rutherford’s 1919 discovery of a nuclear reaction between a nitrogen nucleus and an alpha particle, research was initially limited to using alpha particles emitted by naturally radioactive elements. Rutherford recognized that to observe the disintegration of heavier nuclei, it was necessary to accelerate ions to energies far exceeding those available from natural sources.23

Particle accelerators addressed this need by:
* Enabling Controlled Experiments: Devices like the Cockcroft-Walton voltage multiplier and Van de Graaff generator allowed researchers to produce beams of protons with sufficient energy to induce nuclear reactions, such as the transmutation of lithium.2
* Expanding Research Capabilities: The development of the cyclotron and subsequent synchrotrons enabled scientists to reach significantly higher energy levels, facilitating the study of fundamental interactions and the creation of elements not found in nature.12
* Increasing Collision Energy: Techniques such as alternating-gradient focusing and the use of storage rings for colliding beams have allowed for the highest reaction energies currently obtainable in laboratory settings.2