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They include: californium oxide (CfO 3), californium trichloride (CfCl 3) and californium oxychloride (CfOCl).Ĭalifornium's most stable isotope, californium-251, has a half-life of about 898 years. It is also being used in devices known as neutron moisture gauges that are used to find water and oil bearing layers in oil wells.Ī few compounds of californium have been produced and studied. It is being used as a neutron source to identify gold and silver ores through a technique known as neutron activation. One microgram (0.000001 grams) of californium-252 produces 170,000,000 neutrons per minute. This produced atoms of californium-245, an isotope with a half-life of about 45 minutes, and a free neutron.Ĭalifornium-252, an isotope with a half-life of about 2.6 years, is a very strong neutron source. They bombarded atoms of curium-242 with helium ions using a device known as a cyclotron. and Albert Ghiorso working at the University of California, Berkeley, in 1950. Californium was first produced by Stanley G.
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