Assertion: ionizing radiation's energy | /r/HasProperty | needed for a beta particle
Facets:
value: to attain 99.97%
type: PURPOSE
Source sentences:
text: Because the energy of beta particles produced during nuclear decay do not exceed energies of about 20 MeV (20.6 MeV for 14B is likely the most energetic with 17.9 MeV for 23Na being the next highest energy beta emitter) and the energy needed for a beta particle to attain 99.97% c is 21.1 MeV ( m e c 2 1 − 1 n 2 ≈ 3.385