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Text File  |  1999-06-07  |  341 b   |  6 lines
  1. FIGURE 10-1. The  radiation that is most effective  biologically has a
  2. linear energy transfer of about 100 keV/micrometer. For this radiation
  3. the average separation between ionizing events coincides approximately
  4. with the  diameter of the  DNA double helix  (20 A  or 2 nm),  so that
  5. double strand breaks are produced most efficiently.
  6.