Figure 2.1: One of the beta unit calutron sources. ORNL Photo 24574, from Yergey and Yergey (1997).
Yergey, Alfred L., and A. Karl Yergey. 1997. “Preparative Scale Mass Spectrometry: A Brief History of the Calutron.”Journal of the American Society for Mass Spectrometry 8 (9): 943–53. https://doi.org/https://doi.org/10.1016/S1044-0305(97)00123-2.