Calculating energy in fusion


by frazzle96
Tags: binding energy, coursework, energy, fusion, nuclear fusion
frazzle96
frazzle96 is offline
#1
Nov3-13, 10:01 AM
P: 5
Hi,

I'm doing some coursework on nuclear fusion, and am trying to calculate the energy released by fusing a tritium and a deuterium atom together. I used the equation:

( Σ mass (reactants) - Σ mass (products) ) x 931.5 MeV/amu = Binding energy.

and Deuterium + Tritium = Helium + neutron

I know the value should be about 17.58 MeV, however when I did it it came out as about 18.1.

The values I used are Triton: 3.0160492u , Deuteron: 2.0135532u , Helium nucleus: 4.0015061u and a neutron: 1.0086649u.

Thanks in advance

Frazer
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Bill_K
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#2
Nov3-13, 10:09 AM
Sci Advisor
Thanks
Bill_K's Avatar
P: 3,860
You're off by about 0.5 MeV, which is the mass of an electron. Are the values you quoted the mass of the atoms or the nuclei?
frazzle96
frazzle96 is offline
#3
Nov3-13, 10:21 AM
P: 5
ah, I think the value I used for tritium was the atomic mass rather than the mass of the nuclei... thanks very much!


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