In proton beam therapy, a beam of high-energy protons is used to kill cancerous cells in a tumor. In one system, the beam, which consists of protons with an energy of 2.8×10−11J2.8×10−11J, has a current of 76 nAnA. The protons in the beam mostly come to rest within the tumor. The radiologist has ordered a total dose corresponding to 3.4×10−3J3.4×10−3J of energy to be deposited in the tumor. A)How many protons strike the tumor each second? B)How long should the beam be on in order to deliver the required dose?
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In proton beam therapy, a beam of high-energy protons is used to kill cancerous cells in a tumor. In one system, the beam, which consists of protons with an energy of 2.8×10−11J2.8×10−11J, has a current of 76 nAnA. The protons in the beam mostly come to rest within the tumor. The radiologist has ordered a total dose corresponding to 3.4×10−3J3.4×10−3J of energy to be deposited in the tumor.
A)How many protons strike the tumor each second?
B)How long should the beam be on in order to deliver the required dose?
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