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In the human body, about 4000 positrons per day are generated by the decay of 4°K+, each of which quickly trigger a matter/antimatter annihilation event. If each annihilation event generates two photons each of frequency 1.22 x 1020 s-1, how much total energy is released in the body by this mechanism per day?

In the human body, about 4000 positrons per day are generated by the decay of 4°K+, each of which quickly trigger a matter/antimatter annihilation event. If each annihilation event generates two photons each of frequency 1.22 x 1020 s-1, how much total energy is released in the body by this mechanism per day?

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter21: Nuclear Chemistry
Section: Chapter Questions
Problem 16E: Technetium-99 is prepared from 98Mo. Molybdenum-SS combines with a neutron to give molybdenum-99, an...
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In the human body, about 4000 positrons per day are generated by the decay of 4°K+, each of which quickly trigger a matter/antimatter annihilation event. If each annihilation event generates two photons each of frequency 1.22 x 1020 s-', how much total energy is released in the body by this mechanism per day?
Transcribed Image Text:In the human body, about 4000 positrons per day are generated by the decay of 4°K+, each of which quickly trigger a matter/antimatter annihilation event. If each annihilation event generates two photons each of frequency 1.22 x 1020 s-', how much total energy is released in the body by this mechanism per day?
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