Emilio Segrè Visual Archives

More than 30,000 photos of scientists and their work

Kusch Polykarp H1

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Kusch Polykarp H1

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Image title: 
Atomic beam apparatus conceived by Polykarp Kusch
Credit line: 
Koenig et al., Physics Review 88, 191-199, 1952, courtesy of AIP Emilio Segre Visual Archives

'Atomic beam apparatus conceived by Polykarp Kusch and used by Koenig et al. (Phys. Rev. 88, 191-199, 1952) for one of the first (then) high precision measurements of the anomalous magnetic moment of the electron. The crank-handle at the center controls the position of one of two 12 inch pole faces of an electromagnet that provided the 'c' field of the classic Rabi configuration. The field was water-cooled and powered by submarine batteries. The high voltage discharge that provided atomic hydrogen is seen entering the vacuum 'can' to the left of and above the magnet. Heavy leads to the single turns that produced the 'A' and 'B' fields are its right.'

Original format: 
2 photographic prints (black and white; 10 x 8 inches and 4 x 3.5 inches)
Kusch, Polykarp, 1911-1993