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A beam of 5.0 MeV alpha particles (q = 2e) has a cross-sectional area of 1.50 cm2. It is incident on flesh (r = 950 kg/m3) and penetrates to a depth of 0.70 mm. (a) What dose (in Gy) does the beam provide to the flesh in a time of 3.0 s? (b) What effective dose does it provide? Assume the beam to carry a current of 2.50 x 10^(—9) A and to have QF = 14. |
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