In the textbook, we have beta-plus decay as: p --> n + e + Ve

But, in the book "In search of the edge of time", as the author explains the birth of Neutron stars, the highly energetic, degenerate electrons due to the immense gravitational pressure/density smash/penetrate into protons to create neutrons. It is termed 'inverse beta decay'.

But, the 'inverse beta decay' somehow looked similar to the 'beta-plus decay'. Are they both the same or different? Please explain thoroughly if you can. Thanks!


IBD is something completely different, $\bar{\nu}_e+p\to e^+ + n$. This is closely related to electron capture, $e^- + p\to\nu_e + n$.

  • $\begingroup$ I already read the Wikipedia page. It didn't help that much, certainly because of my little knowledge on the subject. Please, explain/elaborate if you can. Thanks. $\endgroup$ Jan 25 '18 at 21:48
  • $\begingroup$ This. Interestingly the process called "inverse beta decay" is neither a decay in and of itself nor the reverse of beta decay. It is a charged current weak scattering event. $\endgroup$ Jan 25 '18 at 22:04
  • $\begingroup$ Can you please elaborate a little bit more? $\endgroup$ Jan 28 '18 at 2:49

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.