Stopping Power Due to Ionization and Excitation

It was mentioned earlier that most of the interactions of a charged particle involve the particle and atomic electrons. If the mass of the electron is taken as 1, then the masses of the other common heavy charged particles are the 

Electron mass = 1 Proton mass 1840 Deuteron mass = 2(1840) 

N = number of atoms/m in the material through which the particle moves 

Many different names have been used for the quantity dE/dx names like energy loss, specific energy loss, differential energy loss, or stopping power. In 

As stated earlier, Eqs. 4.2 to 4.4 disregard the effect of forces between atoms and atomic electrons of the attenuating medium. A correction for this density ejfect has been made, but it is small and it will be neglected here. The density effect reduces the stopping power slightly. 

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Calculate the stopping power due to ionization and excitation of a 2-MeV electron moving in water. What is the radiation energy loss rate of this particle What is the total energy radiated ... 

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