Home » Nuclear Physics » Fission and Fusion again

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 3,086 other subscribers

Archives

Fission and Fusion again

Share with:


Vivek Asks:


Fusion gives more energy than fission right? When a uranium nucleus fissions into two daughter nuclei fragments, an energy of ~200 MeV is released. Whereas in a fusion of deuterium to give helium atom, only 18.3 MeV is released (which is the maximum?). Yes, the nucleus of uranium are heavier but the same deuterium fusion occurs in the stars and gives off a much larger amount of energy.

 

Ans:

If we consider energy released per reaction (fission or fusion), energy released is more in the case of fission.

If we consider energy released per unit mass (say one kg Uranium and 1 kg hydrogen), the energy released in fusion is very much larger than in the case of fission.

In fusion about 4 amu releases approx 20 MeV whereas in fusion about 236 amu releases approx 200 MeV


Comments

Ask a Doubt

Post your Physics Doubts here

Name (required)

Email (required)

Subject

Message/Doubt/Question

Upload a file if required

askphysics@Twitter

Half Yearly Exam Count Down

Half Yearly Exam Count Down KVS Ernakulam RegionOctober 17, 2017
The Half Yearly Examination for Kendriya Vidyalayas of Kerala starts from 17 October 2017
%d bloggers like this: