Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Columbia University F4

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Columbia University F4

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We charge a usage fee per photo if the photo is published, reproduced in a product or publicly exhibited. This is not a license in the legal sense. As a non-profit institution, we do not make any money providing these photographs. It is only by assessing usage fees that we are able to cover the cost of providing publication quality copies of our photos, preserving the photograph collection according to archival standards, and providing access to the collection by maintaining an online image database. The copyright holder may charge a fee in addition to our service fee.

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Image title: 
The accelerating chamber in place between the pole pieces
Credit line: 
Research Corporation, courtesy of AIP Emilio Segrè Visual Archives

The accelerating chamber in place between the pole pieces. The coaxial lines used to supply high frequency voltage to the electrodes are at the left. This system makes possible large increases in the final energy of the protons, deuterons, or helium particles (alpha particles) accelerated. The range of nuclear phenomena studied can thus be considerable broadened.

Photo date: 
circa 1937
Original format: 
1 photographic print (black and white; 4 x 2.5 inches)
Columbia University