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Interaction of Radiation with Matter I

Particle interactions. Energetic charged particles interact with matter by electrical forces and lose kinetic energy via:ExcitationIonizationRadiative losses~ 70% of charged particle energy deposition leads to nonionizing excitation. Specific Ionization. Number of primary and secondary ion pairs produced per unit length of charged particle's path is called specific ionizationExpressed in ion pairs (IP)/mmIncreases with electrical charge of particleDecreases with incident particle velocity14

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Interaction of Radiation with Matter I

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