Dose Due to Charged Particles

Consider a point in space where it is known that the charged-particle radiation field is given by 

A person exposed to this field will receive a radiation dose because of energy deposited by these charged particles. The dose equivalent rate is given by 

Most of the time in practice, the radiation field is computed not as an analytic function (E) but as an energy group distribution, where 

The division between electrons and betas is necessary (although beta particles are electrons) because an electron beam consists of monoenergetic electrons a beam of beta particles consists of electrons emitted by the beta decay of a nucleus. Therefore, as explained in Chap. 3, these particles have an energy spectrum with a maximum energy and an average energy 

To calculate the dose rate from an electron or a beta beam, one can use Eq. 

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