Early Years
Ernest Walton was born in Abbeyside, County Waterford, Ireland, to a Methodist minister father, Rev. John Walton (1874–1936) and Anna Sinton (1874–1906). In those days a general clergyman's family moved once every three years, and this practice carried Ernest and his family, while he was a small child, to Rathkeale in County Limerick (where his mother died) and to County Monaghan. He attended day schools in counties Down, Tyrone, and Wesley College Dublin before becoming a boarder at Methodist College Belfast in 1915, where he excelled in science and mathematics.
In 1922 Walton won scholarships to Trinity College, Dublin for the study of mathematics and science. He was awarded bachelor's and master's degrees from Trinity in 1926 and 1927, respectively. During these years at college, Walton received numerous prizes for excellence in physics and mathematics (seven prizes in all). Following graduation he was accepted as a research student at Trinity College, Cambridge, under the supervision of Sir Ernest Rutherford, Director of Cambridge University's Cavendish Laboratory. At the time there were four Nobel Prize laureates on the staff at the Cavendish lab and a further five were to emerge, including Walton and John Cockcroft. Walton was awarded his Ph.D. in 1931 and remained at Cambridge as a researcher until 1934.
During the early 1930s Walton and John Cockcroft collaborated to build an apparatus that split the nuclei of lithium atoms by bombarding them with a stream of protons accelerated inside a high-voltage tube (700 kilovolts). The splitting of the lithium nuclei produced helium nuclei. This was experimental verification of theories about atomic structure that had been proposed earlier by Rutherford, George Gamow, and others. The successful apparatus - a type of particle accelerator now called the Cockcroft-Walton generator - helped to usher in an era of particle-accelerator-based experimental nuclear physics. It was this research at Cambridge in the early 1930s that won Walton and Cockcroft the Nobel Prize in physics in 1951.
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