Proton proton annihilation

  • #1

Main Question or Discussion Point

How much force (<10kN) is needed to compress two protons into each other? When it happens, when they are annihilated, the energy of the released gamma rays E=Mp *c^2 ? or some are carried away by short-lived byproducts?

Regards Karoly
 

Answers and Replies

  • #2
Orodruin
Staff Emeritus
Science Advisor
Homework Helper
Insights Author
Gold Member
16,440
6,247
Two protons cannot annihilate, that would violate baryon number conservation.
 
  • #3
mathman
Science Advisor
7,742
406
  • #4
sophiecentaur
Science Advisor
Gold Member
24,003
4,161
It's a matter of Energy rather than Force in discussions about this sort of collision / fusion. This link is short and says it in a nutshell. It was originally thought that protpn proton fusion would need too high a temperature (i.e. high enough energies) for it to happen in a normal Star. There has to be a tunnelling effect for it to happen and to form deuterium (along with other products). It is a very rare occurrence, which is why man-made fusion reactors use 'ready made' deuterium and tritium, which fuse more readily.
 

Related Threads for: Proton proton annihilation

  • Last Post
Replies
14
Views
3K
  • Last Post
Replies
2
Views
560
  • Last Post
Replies
2
Views
542
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
11
Views
4K
  • Last Post
Replies
14
Views
3K
  • Last Post
Replies
1
Views
698
  • Last Post
Replies
12
Views
5K
Top