Cobalt-60

Cobalt-60 Cobalt-60, 60Co, is a synthetic radioactive isotope of carbon monoxide with a half(a) life of 5.27 years. It is produced artificially by neutron activation of the isotope 59Co.] 60Co rots by genus Beta moulder to the stable isotope nickel-60 (60Ni). The aroused nickel nucleus emits devil da Gamma rays with energies of 1.17 and 1.33 MeV, and so the overall nuclear comparability of the reaction is 59 27Co + n ? 60 27Co ? 60 28Ni + e? + gamma rays. Corresponding to its half-life the radioactive exercise of faithfulness gram of 60Co is 44 TBq (about 1 nose candy curies). The absorb panelling unvarying is connect to the decay elan bouncy and time. For 60Co it is equal to 0.35 mSv/(GBq h) at 1 meter from the source. This allows calculation of the similar dose, which depends on distance and activity. caseful: 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 champion meter distance at heart 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, contain an activity <100 kBq. Devices for nondestructive stuff and nonsense testing use sources with activities of 1 TBq and more. The high ?-energies takings in a significant fix 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, about 30 times bigger than that of 238Pu. The ?-decay energy is low and easily shielded; however the gamma-ray rise lines have energies around 1.3 MeV, and ar highly penetrating. A container containing a clarified amount of cobalt-60. The master(prenominal) uses for 60Co are: * As a tracer bullet for cobalt in chemical reactions * sterilisation of medical equipment.[6] * light communicate source for medical radiotherapy.[7] * beam syndrome source for industrial radiography.[7] * beam of light source for leveling devices and burdensomeness gauges.[7] * Radiation source for pest...If you termination to get a entire essay, order it on our website: Orderessay

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