physics 0.0 / 5 ? Applied ScienceMr Brockbank sideA2/A-levelAQA Created by: alanahsmithCreated on: 16-04-14 15:31 why is cobalt-60 suitable to use outside the body it is the most penetrating and it will go through a lot of flesh/muscle 1 of 16 how is cobalt-60 used it is kept in a lead container, which should be moved across the opening of the container when it needs to be used 2 of 16 why is it vital to calculate the correct dose? too much of it could kill healthy cells 3 of 16 advantage of using cobalt-60 in radiotherapy it is easy to make in a nuclear reactor 4 of 16 give another advantage of using cobalt-60 in radiotherapy has a half life of 5.3 years so it will not need replaced as much 5 of 16 give a disadvantage of using cobalt-60 in radiotherapy it can never be turned off which means that it has to be in a lead case 6 of 16 give an example of organ affinity iodine-131 7 of 16 what does organ affinity mean type of therapy that works best with one organ 8 of 16 why do we say that iodine-131 has an organ affinity with the thyroid gland the gland needs iodine to make the thyroxine 9 of 16 what does alpha radiation kill in the body kills the next cell 10 of 16 what does beta radiation kill in the body it will go through cm of cells 11 of 16 what does gamma radiation kill in the body it will kill the cell that is chosen 12 of 16 what is cobalt-60 used for general therapy 13 of 16 what happens when an optic fibre is bent the critical angle stays the same, get total internal reflection 14 of 16 what does refractive index mean how much light is refracted 15 of 16 define critical angle the smallest possible angle of incidence for total internal reflection to occur 16 of 16
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