Before the neutrino hypothesis, the beta decay process was thought to be the transition.
n —> p + e
If this was true, show that if the neutron was at rest, the proton and electron would emerge with fixed energies and calculate them. Experimentally, the electron energy was found to have a large range.
Before the neutrino hypothesis, the beta decay process was thought to be the transition.
n —> p + e
If this was true, show that if the neutron was at rest, the proton and electron would emerge with fixed energies and calculate them. Experimentally, the electron energy was found to have a large range.
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1 Answer
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This is a Long Answer Type Questions as classified in NCERT Exemplar
Explanation- Pn=Pp+Pe
Pp+Pe=0
Pe=Pp=P
Ep= 1/2
Ee= 1/2
= 1/2
From conservation of energy
1/2= 1/2= mnc2
mpc2= 936MeV, mnc2=938MeV, mec2=0.51MeV
since the energy difference n and p is small
mpc2+
pc= mnc2-mpc2 = 938-936= 2MeV
Ep=( )1/2=
= 2.06MeV
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