Register to reply

Calculating energy in fusion

Share this thread:
Nov3-13, 10:01 AM
P: 5

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

Phys.Org News Partner Physics news on
Step lightly: All-optical transistor triggered by single photon promises advances in quantum applications
The unifying framework of symmetry reveals properties of a broad range of physical systems
What time is it in the universe?
Nov3-13, 10:09 AM
Sci Advisor
Bill_K's Avatar
P: 4,160
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?
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!

Register to reply

Related Discussions
Calculating energy released during fusion reactions Advanced Physics Homework 2
Fusion energy? High Energy, Nuclear, Particle Physics 4
Total energy from fusion Advanced Physics Homework 2
Binding Energy and fusion... High Energy, Nuclear, Particle Physics 1
Lab Experiment:Calculating Molar Enthalpy of Fusion of Water Chemistry 8