Cobalt-60

Cobalt-60 Cobalt-60, 60Co, is a synthetic radioactive isotope of cobalt with a one-half life of 5.27 years. It is produced artificially by neutron activation of the isotope 59Co.] 60Co rots by beta rot to the stable isotope nickel-60 (60Ni). The activated nickel nucleus emits cardinal da Gamma rays with energies of 1.17 and 1.33 MeV, hence the overall nuclear equality of the reaction is 59 27Co + n ? 60 27Co ? 60 28Ni + e? + gamma rays. Corresponding to its half-life the radioactive exercise of uprightness gram of 60Co is 44 TBq (about 1 nose candy curies). The imprisoned dit 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 kindred dose, which depends on distance and military action. 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 inwardly one hour. T he 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, keep 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 potty 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 gamma-ray r un lines have energies around 1.3 MeV, and a! re 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 * sterilisation of medical equipment.[6] * light beam source for medical radiotherapy.[7] * light beam syndrome source for industrial radiography.[7] * Radiation source for leveling devices and ponderousness gauges.[7] * Radiation source for pest...If you extremity to get a adept essay, order it on our website: BestEssayCheap.com

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