![Electronic system designed by Dean (?) and later completely redesigned by Alvarez. Used in several of his experiments. For example, slow neutron beams, magnetic moment of the neutron, discovery that He3 was stable, and confirmation of the discovery of fission. Cooksey 30-14, April, 1937 [Photographer: Donald Cooksey]](https://cache.getarchive.net/Prod/thumb/cdn10/L3Bob3RvLzE5MzcvMDQvMDEvZWxlY3Ryb25pYy1zeXN0ZW0tZGVzaWduZWQtYnktZGVhbi1hbmQtbGF0ZXItY29tcGxldGVseS1yZWRlc2lnbmVkLWJ5LWFsdmFyZXotNTU5NGNlLTEwMjQuanBn/320/232/jpg "Electronic system designed by Dean (?) and later completely redesigned by Alvarez. Used in several of his experiments. For example, slow neutron beams, magnetic moment of the neutron, discovery that He3 was stable, and confirmation of the discovery of fission. Cooksey 30-14, April, 1937 [Photographer: Donald Cooksey]")
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![Apparatus used in the discovery that He3 was a stable constituent of ordinary helium (UCRL),1939. Copied from Donald Cooksey film. Morgue 1946-8 (P-7); ZN 3279 [Photographer: Donald Cooksey]](https://cache.getarchive.net/Prod/thumb/cdn10/L3Bob3RvLzE5MzkvMDEvMDEvYXBwYXJhdHVzLXVzZWQtaW4tdGhlLWRpc2NvdmVyeS10aGF0LWhlMy13YXMtYS1zdGFibGUtY29uc3RpdHVlbnQtb2Ytb3JkaW5hcnktYzBhYjM1LTY0MC5qcGc%3D/40/32/webp "Apparatus used in the discovery that He3 was a stable constituent of ordinary helium (UCRL),1939. Copied from Donald Cooksey film. Morgue 1946-8 (P-7); ZN 3279 [Photographer: Donald Cooksey]")
![Periodic Table designed and kept up to date by Luis Alvarez. Radioactive isotopes were listed on round "tags" that were held up by hooks and could be replaced when new data became available. Cooksey 30-15, April, 1937. [Photographer: Donald Cooksey]](https://cache.getarchive.net/Prod/thumb/cdn10/L3Bob3RvLzE5MzcvMDQvMDEvcGVyaW9kaWMtdGFibGUtZGVzaWduZWQtYW5kLWtlcHQtdXAtdG8tZGF0ZS1ieS1sdWlzLWFsdmFyZXotcmFkaW9hY3RpdmUtaXNvdG9wZXMtMjMxZWU5LTY0MC5qcGc%3D/40/29/webp "Periodic Table designed and kept up to date by Luis Alvarez. Radioactive isotopes were listed on round \"tags\" that were held up by hooks and could be replaced when new data became available. Cooksey 30-15, April, 1937. [Photographer: Donald Cooksey]")
![Luis Alvarez in his lab, just before his work leading to the identification of helium-3, circa 1937. Morgue 1966-11 (P-3) Cooksey 30-10. See also: High resolution version XBD200904-00161. [Photographer: Donald Cooksey]](https://cache.getarchive.net/Prod/thumb/cdn10/L3Bob3RvLzIwMTQvMTIvMzEvbHVpcy1hbHZhcmV6LWluLWhpcy1sYWItanVzdC1iZWZvcmUtaGlzLXdvcmstbGVhZGluZy10by10aGUtaWRlbnRpZmljYXRpb24tMTcyM2Y3LTY0MC5qcGc%3D/40/29/webp "Luis Alvarez in his lab, just before his work leading to the identification of helium-3, circa 1937. Morgue 1966-11 (P-3) Cooksey 30-10. See also: High resolution version XBD200904-00161. [Photographer: Donald Cooksey]")
![The 37-inch cyclotron accelerated deuterons to 8 MeV and alpha particles to 16 MeV. It was also used to create radio isotopes and the first artificial element, technetium. This cyclotron was used in one of the first attempts to treat cancer. Cooksey label: Cancer Room Construction, Old Lab. Cooksey 1-4, September 20, 1938.
[Photographer: Donald Cooksey]](https://cache.getarchive.net/Prod/thumb/cdn10/L3Bob3RvLzE5MzgvMDkvMjAvdGhlLTM3LWluY2gtY3ljbG90cm9uLWFjY2VsZXJhdGVkLWRldXRlcm9ucy10by04LW1ldi1hbmQtYWxwaGEtcGFydGljbGVzLXRvLTVkOTQ0Mi02NDAuanBn/40/26/webp "The 37-inch cyclotron accelerated deuterons to 8 MeV and alpha particles to 16 MeV. It was also used to create radio isotopes and the first artificial element, technetium. This cyclotron was used in one of the first attempts to treat cancer. Cooksey label: Cancer Room Construction, Old Lab. Cooksey 1-4, September 20, 1938.
[Photographer: Donald Cooksey]")
![The 37-inch cyclotron accelerated deuterons to 8 MeV and alpha particles to 16 MeV. It was also used to create radio isotopes and the first artificial element, technetium. This cyclotron was used in one of the first attempts to treat cancer. Cooksey label: Cancer Room, note proton snout. Cooksey 1-10, September 20, 1938. [Photographer: Donald Cooksey]](https://cache.getarchive.net/Prod/thumb/cdn10/L3Bob3RvLzE5MzgvMDkvMjAvdGhlLTM3LWluY2gtY3ljbG90cm9uLWFjY2VsZXJhdGVkLWRldXRlcm9ucy10by04LW1ldi1hbmQtYWxwaGEtcGFydGljbGVzLXRvLWVkMjM0ZC02NDAuanBn/40/40/webp "The 37-inch cyclotron accelerated deuterons to 8 MeV and alpha particles to 16 MeV. It was also used to create radio isotopes and the first artificial element, technetium. This cyclotron was used in one of the first attempts to treat cancer. Cooksey label: Cancer Room, note proton snout. Cooksey 1-10, September 20, 1938. [Photographer: Donald Cooksey]")
![First "snout" to bring beam out of magnetic field. Associated individuals Edwin McMillan, Luis Alverez and Arthur H. Snell, not pictured. Cooksey 21- 4, November 16, 1937. [Photographer: Donald Cooksey]](https://cache.getarchive.net/Prod/thumb/cdn10/L3Bob3RvLzE5MzcvMTEvMTYvZmlyc3Qtc25vdXQtdG8tYnJpbmctYmVhbS1vdXQtb2YtbWFnbmV0aWMtZmllbGQtYXNzb2NpYXRlZC1pbmRpdmlkdWFscy1lZHdpbi0xMmUzNGUtNjQwLmpwZw%3D%3D/40/32/webp "First \"snout\" to bring beam out of magnetic field. Associated individuals Edwin McMillan, Luis Alverez and Arthur H. Snell, not pictured. Cooksey 21- 4, November 16, 1937. [Photographer: Donald Cooksey]")
Electronic system designed by Dean (?) and later completely redesigned by Alvarez. Used in several of his experiments. For example, slow neutron beams, magnetic moment of the neutron, discovery that He3 was stable, and confirmation of the discovery of fission. Cooksey 30-14, April, 1937 [Photographer: Donald Cooksey]
Summary
Photographs Documenting Scientists, Special Events, and Nuclear Research Facilities, Instruments, and Projects at the Berkeley Lab
Tags
Date
01/04/1937
Source
The U.S. National Archives
Copyright info
Restricted - Possibly Specific Use Restriction: Copyright Note: The University of California, as the Department of Energy contractor managing the historical image scanning project, has asserted a continuing legal interest in the digital versions of the images included in the NARA accession, and, accordingly, has stipulated that anyone intending to use any of these digital images for commercial purposes, including textbooks, commercial materials, and periodicals, must obtain prior permission from the University of California-Lawrence Berkeley National Lab, through [email protected].
