Specialist surgeons, medical oncologists, radiation oncologists, pathologists, radiologist.
Those are the ones in the medical industry.
When cobalt-60 emits a gamma ray, it remains as cobalt-60. The emission of a gamma ray does not change the identity of the cobalt-60 isotope.
No, cobalt-60 is a synthetic radioactive isotope of cobalt. It is produced by bombarding stable cobalt-59 with neutrons in a nuclear reactor.
Cobalt-60 has an 1/2 life of 5.24 years
Cobalt 60 has an extra neutron buit that does not affect chemical properties
Cobalt-60 decay to nickel-60:Co-60------------Ni-60 + 1 electron + 1 neutrino + gamma rays
Cobalt 60 is a radioactive chemical not usually available for sale. Cherolet manufactures the car Cobalt, which can accelerate from 0 to 60 mph in 5.2 seconds. Its cost is about $30,000.
I would not use Co-60 for shielding. Did you mean, "What is the half value layer for some shielding (XXXXXXXX) using Co-60 as a source of gamma ray energy?
The only natural isotope of Cobalt is Cobalt-59.
Cobalt 60 is a very valuable radiation source for the treaments of many types of cancers.
Since cobalt has an atomic number of 27, any isotope of it contains 27 protons and 27 electrons per atom. The isotope with mass number 60 contains (60 - 27) or 33 neutrons per atom.
Tuesday
In modern times, Cobalt-60 is the substance used to make self-luminous paint. Cobalt-60 has replaced Radium's use for the same applications due to Radium's radiation danger.