Isotopes of californium projectiles, mortar projectiles, rockets, bombs, land mines, and improvised explosive devices (IED). In the oil industry, Cf-252 neutron sources are used to find layers of petroleum and water in a well. Instrumentation is lowered into the well which bombards the formation with high energy neutrons to determine porosity, permeability, and hydrocarbon presence along the length of the borehole. Californium-252 has also been used in the treatment of serious forms of cancer. In patients suffering from certain types of brain and cervical cancer, Cf-252 can be used as a more cost-effective substitute for radium. Isotopes of californium Californium (Cf) is an
Californium compounds emerald green compound with a hexagonal structure that can be prepared by reacting CfO with hydrochloric acid at 500 °C. CfCl is then used as a feeder stock to form the yellow-orange triiodide CfI, which in turn can be reduced to the lavender-violet diiodide CfI. Californium(III) fluoride (CfF) is a yellow-green solid with a crystal symmetry that gradually changes from orthorhombic to trigonal when heated above room temperature. Californium(IV) fluoride (CfF) is a bright green solid with a monoclinic crystal structure. Californium(II) iodide (CfI) is a deep purple solid with a stable rhombohedral structure at room temperature and an unstable