The working of the cyclotron is based on the fact that positively charged particles such as proton, deuteron, etc. can be accelerated to a sufficiently high energy with the help of smaller values of oscillating electric field by making it to cross the same electric field time and again with the use of strong magnetic field. A cyclotron is used
(i) to bombard nuclei with high energy particles and to study the resulting nuclear reaction
(ii) to produce radioactive substances, which may be used in hospitals for diagnosis of diseases in the body