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How much energy is lost due to neutrinos in matter-antimatter reaction ?

by Hurricane93
Tags: energy, lost, matterantimatter, neutrinos, reaction
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Hurricane93
#1
Jan20-13, 01:55 AM
P: 19
I read that matter-antimatter annihilation is not as useful as we thought because a large amount of energy is carried away by neutrinos. So, how much is this energy ? What is the percentage of the lost energy to the energy calculated from E=mc^2 ?
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mfb
#2
Jan20-13, 04:15 AM
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P: 11,889
We had this discussion a while ago here. It depends on the setup, but the fraction is significant for the annihilation of nucleons.
Electron-positron annihilation gives (nearly always) photons, so there are no losses involved.
Hurricane93
#3
Jan20-13, 12:26 PM
P: 19
After reading every single post, I still don't have a conclusion.
I just need a rough percentage. Would saying 50% be wrong ?

mfb
#4
Jan20-13, 04:30 PM
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P: 11,889
How much energy is lost due to neutrinos in matter-antimatter reaction ?

It is the correct order of magnitude :). Something between 20% and 80%.


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