Assertion: protactinium's isotope | /r/CapableOf | emit alpha particles
Facets:
value: primarily
type: DEGREE
value: with an energy of 5 mev
type: OTHER
Source sentences:
text: Protactinium has an alpha emitter (a radioactive isotope that emits alpha particles), and it occurs with 5.0MeV.
text: Its major isotope 231Pa has a specific activity of 0.048 curies (1.8 GBq) per gram and primarily emits alpha-particles with an energy of 5 MeV, which can be stopped by a thin layer of any material.