3. (20' Examine this figure (cf. fig. 10.3 in Alpen): Dose, Gy 30 10 15 25 -1 -2 "Log(S/SO),anoxic Log(S/SO), oxic -6 (a) Show your work, briefly Estimate the oxygen enhancement ratio in the systems shown. Does this OER depend on whether we take S/ So at 1 percent b) survival or 0.01 percent survival? Why or why not? (c) levels of oxygen. Calculate m in the Howard-Flanders and Alper formulation. Explain, briefly. Assume that the steeper curve represents exposure at high log,,(S/SO) 20

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PLEASE HELP ME IN THIS QUESTION BOOK NAME IS RADIATION BIOPHYSICS BY ALPEN

3. (20'
Examine this figure (cf. fig. 10.3 in Alpen):
Dose, Gy
30
5
10
15
20
-1
-2
Log(S/SO),anoxic
Log(S/SO), oxic
-6
(a)
Show your work, briefly
Estimate the oxygen enhancement ratio in the systems shown.
b)
survival or 0.01 percent survival? Why or why not?
(c)
levels of oxygen. Calculate m in the Howard-Flanders and Alper formulation.
Explain, briefly.
Does this OER depend on whether we take S/So at 1 percent
Assume that the steeper curve represents exposure at high
25
(os/s)°"80|
Transcribed Image Text:3. (20' Examine this figure (cf. fig. 10.3 in Alpen): Dose, Gy 30 5 10 15 20 -1 -2 Log(S/SO),anoxic Log(S/SO), oxic -6 (a) Show your work, briefly Estimate the oxygen enhancement ratio in the systems shown. b) survival or 0.01 percent survival? Why or why not? (c) levels of oxygen. Calculate m in the Howard-Flanders and Alper formulation. Explain, briefly. Does this OER depend on whether we take S/So at 1 percent Assume that the steeper curve represents exposure at high 25 (os/s)°"80|
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