Post #4-Science-Oriented Observation II

There are two types of isomers: spin isomers and fission isomers. Spin isomers are the ones I talked about in my previous Science-Oriented Observation where a ground state can be given extra energy and spin and can become more stable through higher-spin and lower-energy gamma emissions. However, fission isomers are nuclei that are the deformed into a prolate or oblate shape, and have extra energy as well. For exampe, the reaction 235U+n=fission products+2n has an intermediary fission isomer of 236U called 236fU. When 235U absorbes a neutron, it usually deformes and fissions almost immediately. Fission isomers may also be observed in nuclear fusion reactions. In the 208Pb(48Ca,2n)254No (lead-208+calcium-48=nobelium-254+2 neutrons) reaction, the americium-244 fission isomer can be formed through the transfer of nucleons from the calcium to the lead. Therefore, the fission of americium-244f is also observed with the 0.31% spontaneous fission branching ratio of 254No.