Proton, antiproton annihilation

  • Thread starter Morrow93
  • Start date
  • #1
1
0

Main Question or Discussion Point

Need help with this question.

What are the wavelengths of the two photons produced when a proton and antiproton at rest annihilate?

Any help is appreciated, thank you :)
 

Answers and Replies

  • #2
129
12
Hi,

Use energy conservation and the de broglie relation between energy and wavelength.
 
  • #3
PAllen
Science Advisor
2019 Award
7,870
1,167
Also note that even for slow proton/antiproton, the energy available allows for many reaction products. Mixtures of pions and gammas are common. Even e+e- is a possible product. The only reason for the myth that annihilation produces photons is that for slow e+/e- there is almost no other available path (there actually is one exceedingly rare alternative even for slow electron positron: a neutrino - anti-neurtrino pair; doubt this has ever been verified experimentally).
 

Related Threads for: Proton, antiproton annihilation

Replies
1
Views
2K
  • Last Post
Replies
2
Views
28K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
1
Views
2K
Replies
3
Views
3K
  • Last Post
Replies
9
Views
912
Replies
8
Views
5K
Replies
3
Views
5K
Top