In classical physics we know photon emits when electron move from higher to lower state but in nuclear fusion photon emits when neutron turn into proton. Is both correct?

8 hours ago, kidaskingquestion said:

In classical physics we know photon emits when electron move from higher to lower state but in nuclear fusion photon emits when neutron turn into proton. Is both correct?

 

A neutron decaying into a proton does not produce a photon; you get the neutron, proton, positron electron and neutrino antineutrino. Fusion reactions, though, can involve excited nuclei and nuclear de-excitations can produce photons. Also particle-antiparticle annihilations, as well as acceleration of charged particles, in addition to the electron (atomic) transition.

Thank you so much for your answer. 

4 hours ago, swansont said:

 

A neutron decaying into a proton does not produce a photon; you get the neutron, a positron, and a neutrino. 

I think you probably intended 'proton, electron and antineutrino' here?

57 minutes ago, sethoflagos said:

I think you probably intended 'proton, electron and antineutrino' here?

Yep. Misplaced the reaction under discussion..

13 hours ago, swansont said:

Yep. Misplaced the reaction under discussion..

..and you should write "free neutron". Neutrons bound in nuclei can also decay by double beta decay (rarely double beta decay neutrinoless) e.g. Uranium-238 into Plutonium-238 (it is rare decay mode). https://www.google.com/search?q=Uranium-238+double+beta+decay

 

 

Edited November 12, 20223 yr by Sensei