Search results
Results from the WOW.Com Content Network
Californium slowly tarnishes in air at room temperature. Californium compounds are dominated by the +3 oxidation state. The most stable of californium's twenty known isotopes is californium-251, with a half-life of 898 years. This short half-life means the element is not found in significant quantities in the Earth's crust.
Found on Earth in trace quantities by Olavi Erämetsä in 1965; so far, promethium is the most recent element to have been found on Earth. [194] 97 Berkelium: 1949 G. Thompson, A. Ghiorso and G. T. Seaborg (University of California, Berkeley) Created by bombardment of americium with alpha particles. [195] 98 Californium: 1950 S. G. Thompson, K ...
Its density of 8.84 g/cm 3 is lower than that of californium (15.1 g/cm 3) and is nearly the same as that of holmium (8.79 g/cm 3), despite einsteinium being much heavier per atom than holmium. Einsteinium's melting point (860 °C) is also relatively low – below californium (900 °C), fermium (1527 °C) and holmium (1461 °C).
Pages in category "Californium" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. ...
From 1 October 2015 to 6 April 2016, the Dubna team performed a similar experiment with 48 Ca projectiles aimed at a mixed-isotope californium target containing 249 Cf, 250 Cf, and 251 Cf, with the aim of producing the heavier oganesson isotopes 295 Og and 296 Og. Two beam energies at 252 MeV and 258 MeV were used.
The mixed-oxide (MOX) fuel, which is to be used in power reactors, should contain little or no curium because neutron activation of 248 Cm will create californium. Californium is a strong neutron emitter, and would pollute the back end of the fuel cycle
Theia, an ancient planet, collided with Earth to form the moon, scientists believe. A new study suggests Theia could have also formed mysterious blobs called large low-velocity provinces, or LLVPs.
Californium (98 Cf) is an artificial element, and thus a standard atomic weight cannot be given. Like all artificial elements, it has no stable isotopes. The first isotope to be synthesized was 245 Cf in 1950. There are 20 known radioisotopes ranging from 237 Cf to 256 Cf and one nuclear isomer, 249m Cf.