Word: cyclotronic
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...science only a short time. Only in 1934 did Irene Curie* and her husband, Frédéric Joliot, first make ordinary elements such as iron and iodine radioactive so that they give off sub-atomic particles and gamma rays just as radium does. The invention of the cyclotron, Ernest Orlando Lawrence's great atom-smashing machine in California, simplified the manufacture of such elements so that they are now commonplace in physical laboratories. And in Copenhagen in 1935 O. Chiewitz and G. Hevesy first used such artificial radioactive elements as tracers in biological research...
University Cyclotron Committee, Kenneth T. Bainbridge, chairman, Jabez C. Street, John J. Livingood, George B. Kistiakowsky, Kenneth V. Thimann, A. Baird Hastings, Joseph C. Aub, Shields Warren, and Roger W. Hickman, for the installation of a neutron-absorbing roof for the protection of cyclotron operators from the effects of neutron radiation...
...green color imparted to diamonds by an hour of cyclotron bombardment with deuterons, heavy hydrogen ions, is very much like that characteristic of the occasional diamonds exposed to radium rays, Dr. Berman said...
...either the radium or cyclotron bombardment of the diamonds, Dr. Berman explained, a short lived radioactive form of carbon is produced, together perhaps with some gas, like helium. The theory is that such gas molecules could become tightly lodged in the microscopic crevices of the diamond structure, and could impart the green color through a scattering of light rays...
When the radium-green diamonds, are heated, it is conjectured, the gas molecules bounces from the crevices and the diamond becomes white again. In the cyclotron-green diamonds the heating supposedly simply rearranges the gas particles in such a way as to impart the yellow-brown color. No way has yet been found of dispersing or changing the yellow-brown effect, Dr. Berman said...