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Relationship of absorbed dose (Gray) to cf-252 activity (milicurie/hour)

  1. Nov 18, 2011 #1
    1. The problem statement, all variables and given/known data

    Hi there, I wanted to use TLD badges for my experiment using cf-252 instead of chips because they were the ones available. I was informed by the Laboratory section that the TLD had a max absorbed dose of 10 Gray. The neutron source cf-252 has an activity of 50 milicurie/hour.

    2. Relevant equations

    I googled up the relationship of absorbed dose with neutron source activity.. Maybe i was not sure. But i found that:
    Absorbed Dose Constants for a variety of radionuclides, given in units of gram-rad (g-rad) per microcurie-hour (uCi/hr).
    Absorbed Dose Constants are specific to the type and energy of the radiation emitted during the decay of the radionuclide.

    3. The attempt at a solution
    i foundthis out;
    In the first week of therapy, 6 Gy (40 Gy‐eq) of the 252Cf neutron component are
    applied. And in the fifth week of therapy 16 Gy absrbed dose dose of gamma radiation are given intracavitary
  2. jcsd
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