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Slide 11

    TEXT VERSION OF SLIDE:

    Title: Alpha Particles (or Alpha Radiation)
    Type: Text Slide
    Content:
    • Helium nucleus (2 neutrons and 2 protons); +2 charge; heavy (4 AMU). Typical Energy = 4-8 MeV;
    • Limited range (<10cm in air; 60µm in tissue);
    • High LET (QF=20) causing heavy damage (4K-9K ion pairs/µm is tissue);
    • Easily shielded (e.g., paper, skin) so an internal radiation hazard.