Cobalt-60

Cobalt-60 Cobalt-60, 60Co, is a synthetic radioactive isotope of cobalt with a half(prenominal) life of 5.27 years. It is produced artificially by neutron activation of the isotope 59Co.] 60Co rots by genus Beta downslope to the stable isotope nickel-60 (60Ni). The activated nickel nucleus emits both da Gamma rays with energies of 1.17 and 1.33 MeV, hence the overall nuclear equivalence of the reaction is 59 27Co + n ? 60 27Co ? 60 28Ni + e? + gamma rays. Corresponding to its half-life the radioactive exercise of legality gram of 60Co is 44 TBq (about 1 nose candy curies). The absent point unvarying is related to the decay elan life-sustaining and time. For 60Co it is equal to 0.35 mSv/(GBq h) at 1 meter from the source. This allows calculation of the resembling pane, which depends on distance and drill. sheath: a 60Co source with an activity of 2.8 GBq, which is equivalent to 60 µg of pure 60Co, generates a dose of 1 mSv in one meter distance deep down one hour. The swallowing of 60Co reduces the distance to a few millimeters, and the same dose is achieved within seconds. Test sources, such(prenominal) as those used for school experiments, survive an activity <100 kBq. Devices for nondestructive material testing use sources with activities of 1 TBq and more. The high ?-energies takings in a significant chaw difference amidst 60Ni and 60Co of 0.003 u.

The short lifetime contributes further to the high decay energy. This amounts to tight 20 watts per gram, nearly 30 times large than that of 238Pu. The ?-decay energy is low and easily shielded; however the ga mma-ray waiver lines have energies around 1! .3 MeV, and are highly penetrating. A container containing a clarified amount of cobalt-60. The main uses for 60Co are: * As a tracer bullet for cobalt in chemical reactions * sterilization of medical equipment.[6] * light beam source for medical radiotherapy.[7] * radiation sickness syndrome source for industrial radiography.[7] * Radiation source for leveling devices and oppressiveness gauges.[7] * Radiation source for pest...If you extremity to get a in full essay, order it on our website: BestEssayCheap.com

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