60 inch cyclotron built by Ernest Lawrence

60 inch cyclotron built by Ernest Lawrence

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Credit: LAWRENCE BERKELEY LABORATORY/SCIENCE PHOTO LIBRARY

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Caption: The "60-inch" (1. 5 m) cyclotron built by Ernest Lawrence & collaborators at the Lawrence Berkeley Laboratory, California. It is seen in August 1939, 2 months before it accelerated deuterons (nuclei of "heavy hydrogen" consisting of a proton & a neutron) to an energy of 19 MeV. The deuterons came from a source at the centre of the machine & then orbited within a hollow chamber divided into 2 D-shaped hemispheres; as they crossed the gaps between the Ds, they were accelerated by an electric field. The particles were contained by a magnetic field, but spiralled outwards as they gained energy.

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Keywords: 1.5m, accelerator, california, cyclotron, lawrence berkeley, lbl, metres, odyssey, particle physics laboratory, research, us, usa

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